CN102880424A - 用于raid管理、重新分配以及重新分段的系统和方法 - Google Patents

用于raid管理、重新分配以及重新分段的系统和方法 Download PDF

Info

Publication number
CN102880424A
CN102880424A CN2012102514547A CN201210251454A CN102880424A CN 102880424 A CN102880424 A CN 102880424A CN 2012102514547 A CN2012102514547 A CN 2012102514547A CN 201210251454 A CN201210251454 A CN 201210251454A CN 102880424 A CN102880424 A CN 102880424A
Authority
CN
China
Prior art keywords
raid
data storage
disk
equipment
scoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012102514547A
Other languages
English (en)
Other versions
CN102880424B (zh
Inventor
M·J·凯勒曼
M·J·尤托马克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DELL International Ltd
Original Assignee
Compellent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compellent Technologies Inc filed Critical Compellent Technologies Inc
Publication of CN102880424A publication Critical patent/CN102880424A/zh
Application granted granted Critical
Publication of CN102880424B publication Critical patent/CN102880424B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0602Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614Improving the reliability of storage systems
    • G06F3/0619Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0602Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0604Improving or facilitating administration, e.g. storage management
    • G06F3/0607Improving or facilitating administration, e.g. storage management by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0602Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0608Saving storage space on storage systems
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0628Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629Configuration or reconfiguration of storage systems
    • G06F3/0632Configuration or reconfiguration of storage systems by initialisation or re-initialisation of storage systems
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0628Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0646Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
    • G06F3/0647Migration mechanisms
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0668Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671In-line storage system
    • G06F3/0683Plurality of storage devices
    • G06F3/0689Disk arrays, e.g. RAID, JBOD
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/10Indexing scheme relating to G06F11/10
    • G06F2211/1002Indexing scheme relating to G06F11/1076
    • G06F2211/1004Adaptive RAID, i.e. RAID system adapts to changing circumstances, e.g. RAID1 becomes RAID5 as disks fill up

Abstract

本公开内容涉及用于RAID重新分段的系统和方法。一种方法包括:基于至少一个评分选择供迁移的初始RAID设备、创建替换RAID设备、将数据从该初始RAID设备移到该替换RAID设备、以及去除该初始RAID设备。该方法可通过该系统自动执行或手动执行。该方法可周期性地、连续性地、在每次RAID设备迁移之后、添加磁盘驱动器之后和/或去除磁盘驱动器之前等执行。一种系统包括RAID子系统和磁盘管理器,该磁盘管理器被配置成自动计算每个RAID设备的评分、基于该RAID设备的相关评分选择RAID设备、创建替换RAID设备、将数据从该所选RAID设备移到该替换RAID设备、以及去除该所选RAID设备。

Description

用于RAID管理、重新分配以及重新分段的系统和方法
本申请是PCT国际申请号为PCT/US2007/069669、国际申请日为2007年5月24日、中国国家申请号为200780018922.3、题为“用于RAID管理、重新分配以及重新分段的系统和方法”的申请的分案申请。
相关申请的交叉引用
本申请要求2006年5月24日提交的美国临时专利申请S/N 60/808,045的优先权,其通过引用完全结合于此。
发明领域
本发明一般涉及磁盘驱动器系统和方法,尤其涉及具有动态存储块体系架构的独立冗余磁盘阵列(RAID)设备管理、重新分配、以及重新分段以供在RAID参数或磁盘配置发生改变时最优化RAID设备布局的磁盘驱动器系统和方法。
发明背景
现有的磁盘驱动器系统是以这样的一种方式来设计的:虚拟卷在物理磁盘上以在卷创建时确定的方式分布(或映射)并在虚拟卷的整个使用期保持固定。即,磁盘驱动器系统基于数据存储空间的虚拟卷的具体位置和大小固定地分配数据。如果虚拟卷证实无法满足所需数据存储用途,则现有系统需要创建新虚拟卷以及随之将先前存储数据从旧虚拟卷复制到新虚拟卷以改变卷特性。此过程是耗时并昂贵的,因为它需要双重物理磁盘驱动器空间。
这些现有技术的磁盘驱动器系统需要了解、监控和控制数据存储空间的虚拟卷的精确位置和大小以便存储数据。此外,这些系统经常需要更大的数据存储空间,籍此添加更多的RAID设备。结果,不使用清空的数据存储空间,而预先获取额外的数据存储设备,例如RAID设备以供存储、读/写和/或恢复系统中的数据。附加的RAID设备是昂贵的,且在真正需要额外的数据存储空间之前并不是必需的。
因此,需要改进的磁盘驱动器系统和方法,尤其需要有效的、动态的RAID空间和时间管理系统。还需要用于使RAID管理、重新分配、以及重新分段在没有损失服务器或主机数据访问或折衷弹性(compromisedresiliency)的情况下进行的经改进的磁盘驱动器系统。
发明概要
本发明在一实施例中是一种在磁盘驱动器系统中进行RAID重新分段的方法。该方法包括:基于至少一个评分选择用于迁移的初始RAID设备、创建替换RAID设备、将存储在初始RAID设备上的数据迁移到替换RAID设备;以及去除初始RAID设备。评分可包括初始评分、替换评分以及覆盖评分。此外,该方法可通过系统自动执行或诸如通过系统管理员手动执行。该方法可周期性地、连续性地、在每一次RAID设备迁移之后,添加磁盘驱动器之后和/或去除磁盘驱动器之前执行。
本发明在另一实施例中是一种具有RAID子系统和磁盘管理器的磁盘驱动器系统。该磁盘管理器被配置成:自动计算针对RAID子系统的各个RAID设备的评分、基于RAID设备的相对评分从子系统中选择RAID设备、创建替换RAID设备、将存储于所选RAID设备上的数据的一部分迁移到替换RAID设备、以及去除所选RAID设备。
本发明在又一实施例中是一种磁盘驱动器系统,包括:用于基于至少一个针对各个RAID设备计算的评分选择用于迁移的RAID设备的装置、用于创建至少一个替换RAID设备的装置、用于将存储于所选RAID设备上的数据移到至少一个替换RAID设备的装置、以及用于去除所选RAID设备的装置。
虽然公开了多个实施例,但对本领域普通技术人员而言从示出和描述本发明各说明性实施例的以下详细描述中,本发明的其它各实施例也将变得显而易见。如可以理解地,可在各显然方面对本发明进行修改而不背离本发明的精神和范围。因此,附图和详细描述本质上被认为是说明性的而非限制性的。
附图简述
虽然本说明书具有被认为构成本发明的具体指出并清楚要求保护其主题的权利要求书,但是可相信从结合附图作出的以下说明中将对本发明有更好的理解,在附图中:
图1A是根据本发明一实施例的具有RAID配置的磁盘阵列。
图1B是具有附加RAID设备的图1A的磁盘阵列。
图1C是在去除RAID设备之后的图1B的磁盘阵列。
图2A是根据本发明另一实施例的具有RAID配置的磁盘阵列。
图2B是具有附加RAID设备的图2A的磁盘阵列。
图2C是在去除RAID设备并添加另一RAID设备之后的图2B的磁盘阵列。
图2D是在去除又一RAID设备之后的图2C的磁盘阵列。
图3A是根据本发明又一实施例的具有RAID配置的磁盘阵列。
图3B是示出RAID设备的迁移的磁盘阵列。
图3C是示出多个RAID设备的进一步迁移的图3B的磁盘阵列。
图3D是示出多个RAID设备的再进一步迁移的图3C的磁盘阵列。
图3E是新RAID配置中的图3A的磁盘阵列。
图4是根据本发明一实施例的重新分段过程的流程图。
图5是根据本发明一实施例的具有带不同大小RAID设备的RAID配置的磁盘阵列。
详细描述
本发明各实施例一般涉及磁盘驱动器系统和方法,尤其涉及实现跨一个或多个RAID设备展开的一个或多个虚拟卷的磁盘驱动器系统和方法,这些RAID设备又在磁盘驱动器组上构建。RAID设备管理、重新分配、以及重新分段(“Restriping”)提供用于改变与虚拟卷相关联的诸如大小、数据保护水平、相关成本、访问速度等之类的各种特性的系统和方法。此系统和方法可在磁盘配置发生改变时通过执行动作发起或自动发起。
本公开内容的各实施例提供使动态存储块体系架构RAID设备重新分段的在RAID参数或磁盘配置发生改变时能最优化RAID设备布局的经改进的磁盘驱动器系统。在一实施例中,RAID设备的布局在将磁盘添加到系统时可根本上被重新平衡。通过重新平衡,虚拟化性能可在该系统内通过使用最大可用磁盘配置得到改进。重新分段还可提供将数据从磁盘组移出的能力,从而使那些磁盘能从系统中去除而不损失正常运行时间或数据保护。更进一步地,重新分段可提供改变RAID参数的能力,从而给予用户即使在数据已被写入之后也能调节性能和/或存储能力的能力。重新分段附加地可提供使重新分段能在没有损失服务器或主机数据访问或折衷弹性的情况下进行的经改进的磁盘驱动器系统和方法。
在这里所述的各个实施例以多种方式改进了现有磁盘驱动器系统。在一实施例中,虚拟卷和物理磁盘驱动器空间之间的映射可在微细标度上变化。在另一实施例中,先前所存储的数据可以小单元自动迁移,且适当的映射可在无需完整复制物理资源的情况下被更新。在又一实施例中,已被映射到适当资源的虚拟卷的各个部分无需迁移,从而减少用于重新配置卷所需的时间。在再一实施例中,存储系统可自动并行地重新配置虚拟卷的全部组。此外,存储系统在发生物理资源改变时可自动重新配置虚拟卷。其他相对现有磁盘驱动器系统的各种优点将被本领域普通技术人员所理解,且不限于所列出的这些优点。
此外,重新分段和磁盘分类可以是管理控制存储系统的有力工具。例如被发现来自缺陷制造批次的磁盘驱动器可被重新分类,以进行远离这些磁盘驱动器的迁移。类似地,一组驱动器可被保持在“保留”分类中,且之后可被重新分类以成为更大可用组的一部分。重新分段以加宽RAID设备可逐步纳入这些附加的保留单元。注意:几个益处可通过在此所述的各实施例被理解,且先前的示例列表不是穷尽性的也不是限制性的。
为在此描述各个实施例,“卷”可包括用于存储计算机数据的可外部访问容器。在一实施例中,容器可经由互连协议表示成存储块相接阵列。在另一实施例中,各个存储块可具有固定大小-传统上为512字节。但是也可使用诸如256、1024等字节之类的其他大小的存储块。通常,对任何给定位置的数据执行的辅助操作包括‘写’(存储)和‘读’(取回)。但是还可支持诸如‘验证’之类的其他操作。用来访问卷的互连协议可与用来访问磁盘驱动器的互连协议相同。因而,在一些实施例中卷通常可与磁盘驱动器一致地显现和运行。卷传统上可被实现成磁盘驱动器的分区或阵列内磁盘驱动器的简单级联。
在这里所使用的“虚拟卷”可包括可外部访问的容器以供存储从各种硬件和软件资源构造的数据,并通常可模仿传统卷的行为。特别地,包含磁盘驱动器阵列的系统可表示利用磁盘阵列的非相交部分的多个虚拟卷。在此类系统中,各个磁盘驱动器的存储资源可在阵列中聚合,且随后被划分成各个卷以供外部计算机使用。在一些实施例中,外部计算机可以是服务器、主机等。
在此使用的“RAID设备”可包括磁盘分区的聚合,其提供级联并对磁盘驱动器失效提供弹性。用于级联和弹性的RAID算法是公知的,并包括诸如RAID 0、RAID 1、RAID 0+1、RAID 5、RAID 10等的RAID级别。在给定磁盘阵列中,多个RAID设备可驻留于任何给定磁盘组。这些RAID设备的每一个可使用不同的RAID级别,具有不同的诸如条带大小之类的参数、可按不同顺序在各个磁盘驱动器上展开、可占据磁盘驱动器的不同子组等。RAID设备可以是可内部访问的虚拟卷。它可提供固定大小的数据存储位置的相接阵列。特定RAID参数确定RAID设备地址与磁盘驱动器上的数据存储地址之间的映射。在本公开的内容中,描述用于构造和修改来自RAID设备的可外部访问虚拟卷的系统和方法,其提供经改进的功能性。
虚拟卷构造
利用本公开内容的存储系统开始时可在磁盘阵列上构造具有各种特性的RAID设备组。RAID设备可被逻辑地划分成在此称为“分页”的单元,其大小可以是许多存储块。通常的分页大小可以是4,096个存储块。但是原则上可使用1个存储块以上的任何分页大小。然而,分页大小通常包括2的乘方的存储块数量。这些分页可通过虚拟卷管理软件管理。最初,来自各个RAID设备的所有分页可被标记为空闲。分页可在按需基础上被动态地分配成虚拟卷。即,分页可在确定给定地址被第一次写入时被分配。在写入之前读取的地址可被给予缺省数据值。虚拟卷管理软件可维持虚拟卷地址和RAID设备内的分页之间的映射。注意,给定虚拟卷可由来自多个RAID设备的分页构成,多个RAID设备可进一步具有不同特性。
扩展用这种方式构造的虚拟卷的大小可通过增大提交给服务器的地址的范围来实现。地址到分页的映射可在先前可用和扩展后的地址范围内使用相同的写入时分配(allocate-on-write)策略继续。
给定虚拟卷的性能和弹性特性可大部分根据分配到那虚拟卷的分页的聚合行为确定。分页从RAID设备和其上构建RAID设备的物理磁盘设备继承其特性。因而,在一实施例中,可进行RAID设备之间的分页迁移以便修改虚拟卷的除大小之外的特性。在这里使用的“迁移”可包括重新分配新分页、将先前所写数据从旧分页复制到新分页、更新虚拟卷映射、以及将旧分页标记为空闲。传统上不可能转换RAID设备特性(即重新映射到新RAID级别、条带大小等)以及同时在适当位置保留数据。
存在数个可被修改以产生不同的虚拟卷特性的独立参数。数种情况在这里被详细描述。然而,在这里被详细描述的情况是本公开内容的各个实施例的例示而并不是限制性的。本公开内容在一些实施例中可包括所有或任一这些参数的同时修改。
RAID参数修改
为了说明目的,在图1A中示出包含五个磁盘102、104、106、108、110的磁盘阵列100。可以理解,可根据在此公开的各个实施例使用任意数量的磁盘,且为了描述一实施例,随机选择了示例性的五个磁盘系统。开始时,两个RAID设备,例如RAID设备A 112和B 114可在磁盘阵列上构建。如果有剩余空间,该剩余空间可不分配和使用。再一次,可理解可根据在此公开的各个实施例使用任意数量的RAID设备,且为了描述一实施例的目的,随机选择了示例性的两个RAID设备。多个虚拟卷可从包含于RAID设备中的分页构建。如果需要修改给定虚拟卷的特性,则附加的RAID设备可在剩余空间和适当的被迁移分页中构建,如前所述。
图1B示出在创建新RAID设备,例如RAID设备C 116之后的RAID配置的实施例,并示出数据从RAID设备A 112的迁移。RAID设备C 116可在RAID级别、条带大小、或其他RAID参数等上与RAID设备A 112不同。在一些实施例中,可仅仅通过向RAID设备重新分配相同参数、但磁盘驱动器上的不同位置而可能具有改进性能。例如,磁盘驱动器的性能可从物理盘片的内部到外部地变化,并且如果所有数据被密集定位则可减少磁头寻道的时间。
在完成迁移时,RAID设备A 112可被删除,从而保留如图1C所示的示例RAID配置。
从图1A到图1C的示例性RAID重新配置还显示移动虚拟卷的各部分的能力。即在一实施例中,不移动整个卷,而是可迁移一个或多个虚拟卷的各个部分。这是可以实现的,因为单个虚拟卷可跨多个RAID设备分配。类似地,示例配置显示移动虚拟卷组的能力,因为从一个RAID设备迁移到另一个RAID设备的分页可被分配到多个虚拟卷。
添加磁盘驱动器
在图2A中示出具有包含五个磁盘202、204、206、208、210的磁盘阵列200的另一实施例,其中两个附加磁盘驱动器212、214已被添加到现有配置。可以理解,根据在此公开的各个实施例可使用任意数量的磁盘,且为了描述一实施例的目的随机选择了示例性的五个磁盘系统。类似地,可以理解,可根据在此公开的各个实施例添加任意数量的磁盘,且为了描述一实施例的目的随机选择了示例性的两个附加磁盘。在一些实施例中,可期望重新配置系统并且跨所有七个磁盘展开的RAID设备。然而,可以理解经重新配置的RAID设备不需要跨所有可用磁盘展开。在其中RAID设备跨多个磁盘展开的实施例中,系统的总处理量可通过并行地利用多个硬件增加。另外,RAID设备布局限制可导致更有效地使用附加磁盘。特别地,RAID 5通常可能需要最少数量的独立磁盘以便提供弹性。常遇到的RAID 5实现可能需要最少五个磁盘。因而,可期望将各分页从例如RAID设备A 216和B 218迁移到跨所有七个磁盘的适当替换。用于重新配置的可能序列在图2B-D中示出。
在此序列中,可创建更宽的RAID设备C 220,且数据可从RAID设备A 216迁移到RAID设备C 220。然后可删除RAID设备A 216并可创建RAID设备D 222。RAID设备D 222可用来重新定位先前包含于RAID设备B 218中的数据。
这样,原始磁盘驱动器上所需的唯一额外空间可以是创建RAID设备C220所需的空间。在一示例说明的实施例中,在其中没有其他RAID参数改变的情况下,RAID设备C 220的各广度(extent)可以是用在构造RAID设备A 216中的广度大小(即RAID设备C在5个初始驱动器+2个附加驱动器中展开)的5/7。
注意,该过程完全可逆,且可用来在比如期望从图2D的示例配置中去除磁盘212和214时从系统中去除一个或多个磁盘驱动器。类似地,多个初始RAID设备可被迁移到单个RAID设备或少数RAID设备(参见例如图3C)。此外,单个初始RAID设备可被迁移到多个新RAID设备(参见例如图3B)。
参考图2A到图2D所述的前面一个实施例的示例显示在未使用空间存在于原始磁盘组上时跨附加磁盘迁移数据的能力。然而在一些实施例中,可能没有足够的磁盘空间来迁移、去除RAID设备等。尽管如此,还是可能将数据迁移到附加的磁盘。在这种情况下,磁盘空间可被重新分配以提供执行移动所需的额外空间。如果RAID设备如下详细所述的替换评分高于初始评分,则可分配相同大小的永久RAID设备。可能不需要其它判定。如果RAID设备的如下详细所述的覆盖评分高于初始评分,则可使用临时空间。参考图3A到3E在具有包含四个磁盘302、304、306、308的磁盘阵列300的一实施例中详细描述此过程,其中使用多步迁移。三个磁盘310、312、314已被添加到磁盘阵列300。可以理解,可根据在此公开的各个实施例使用任意数量的磁盘,且为了描述一实施例的目的随机选择了示例性的四个磁盘系统。类似地,可以理解,可根据在此公开的各个实施例添加任意数量的磁盘,且为了描述一实施例的目的随机选择了示例性的三个附加磁盘。
用于重新配置图3A所示的系统以使用阵列中所有可用的磁盘驱动器的策略可包括创建一个或多个临时RAID设备以及使数据从例如RAID设备C 320离开原始磁盘驱动器迁移到例如临时RAID设备D 322和E 324。临时RAID设备可用在其中原始磁盘组处于或接近容量的这些情况下。在各替换实施例中,临时空间可能不需要被分配成RAID设备,且可以任一本领域已知的方法使用以适当保持数据。类似地,虽然示出了两个临时RAID设备D 322和E 324,但是可以理解可利用更少或更多数量的临时RAID设备。
在一实施例中,数据分级过程可管理数据在初始RAID设备与(一个或多个)临时RAID设备或者在其他情况下是(一个或多个)新的永久RAID设备之间的移动。在另外的实施例中,分段可尝试使用相同的RAID级别(如果可用的话)。在其他实施例中,分段可将数据移到不同的RAID级别。
临时RAID设备的大小可取决于初始RAID设备大小以及分页池内的可用空间。临时RAID设备的大小可提供充足的空间,以使在初始RAID设备被删除时分页池可继续正常运行并且不分配更多的空间。分页池可基于分页池的大小在已配置的阈值下分配更多的空间。
一旦数据已被移出RAID设备C 320,它就可被删除,从而为例如RAID设备X 326的跨所有磁盘驱动器的新RAID设备提供空间。删除RAID设备C 320可将RAID设备C 320消耗的磁盘空间归还给磁盘上的空闲空间。在这点上,磁盘管理器可将相邻空闲空间分配组合成单个更大分配以减少碎片。删除RAID设备可比先前跨更多数量磁盘创建空闲空间。具有更高评分的RAID设备可从此空闲空间片段创建。
在初始RAID设备C 320被删除之后,重新分段可创建替换RAID设备X 326,如图3C所示。在一实施例中,替换RAID设备X 326可使用尽可能多的磁盘以最大化虚拟化的益处。重新分段可尝试分配大于初始RAID设备的RAID设备。在另一实施例中,重新分段可使用替换或覆盖评分除以初始评分乘以初始RAID设备大小的计算值来进行。这可创建每个磁盘使用与之前相同的磁盘空间量,并且可减少磁盘碎片。
通过明智地限制例如RAID设备A 316、B 318和C 320的初始RAID设备的大小,有可能创建RAID设备X 326以使它可保持所有来自例如RAID B 318和E 324的数据,从而使该过程继续直到最终配置在图3E中实现。即,可创建RAID设备Y 328,RAID设备A 316和D 322可被迁移到RAID设备Y 328,并且可删除RAID设备A 316和D 322。
如果临时RAID设备或例如RAID设备D 322和E 324的多个临时RAID设备被创建并标记为临时,则这些RAID设备可被标记以供去除,如图3C到3E所示。在一实施例中,作为每个循环的一部分,临时RAID设备可被去除。由于创建更大的替换RAID设备,因此所需临时空间的量可下降。再次注意,在一些实施例中,RAID设备迁移可能不需要分配临时空间以迁移或去除数据。
在一重新分段实施例中,临时RAID设备的去除可使用用于迁移或去除初始RAID设备的步骤的子集,诸如数据的移动和临时RAID设备的删除。
在一实施例中,如果临时RAID设备的评分超过初始RAID设备的评分,则临时RAID设备可被认为是永久RAID设备。
即,它可不作为移动RAID设备的过程的一部分被而自动删除。在其它实施例中,临时RAID设备只有在它具有远高于初始RAID设备的评分时才可被保留。
重新分段可涉及多个去除初始低评分RAID设备并用新的更高评分的RAID设备来代替它的进一步步骤。例如,重新分段可容许系统中的磁盘是满的且不具有用于另一RAID设备的空间的可能性。重新分段可在尝试重新分段RAID设备之前削减额外空间。削减额外空间可空出附加的磁盘空间并增大重新分段的成功率。
在一些实施例中,重新分段可陷入死锁。例如临时空间的大小可消耗掉移动初始RAID设备所需的空间的一部分。如果因所有分页不能空出而变得不可能去除RAID设备,则RAID设备可被标记成失效,且重新分段可转换到下一可(或应当)被迁移的RAID设备。
参考图4,描述了重新分段的过程400的一实施例的流程图。可以理解,图4示出一实施例,且可根据本公开内容使用各种可选实施例和过程。首先,如步骤402和404所示,重新分段可确定是否存在可(或应当)迁移或去除等的RAID设备。在一实施例中,重新分段可检查系统内的所有RAID设备,并选择具有最低相对评分的最小RAID设备。在其他各实施例中,重新分段可选择其他RAID设备,且在此所述的重新分段不限于选择最小RAID设备和/或具有最低评分的RAID设备。然而,一般而言,如果最小RAID设备的移动迁移失效,则较大RAID设备可能也不会成功。在一实施例中,最低评分RAID设备可通过替换或覆盖评分除以初始评分确定。根据本公开内容,还存在确定最低评分RAID设备的其他各种方法,包括单独使用RAID设备的初始评分。
除标识供迁移或去除的RAID设备之外,如图4所示RAID设备移动可包括多个步骤以最优化RAID配置,诸如但不限于分配临时空间(步骤406)、移动数据(步骤408)、删除原始RAID设备(步骤410)、分配新的RAID设备(步骤412)和/或删除临时RAID设备(步骤414和416)。以上的附加步骤列表是示例性的,且RAID设备移动并非必需所列步骤中的每一个,且在一些实施例中可包括进一步的或不同于那些所列出的步骤。例如在一些实施例中,可不使用临时空间,且因此可不分配临时空间。
在一些实施例中,重新分段可限制RAID设备的移动。例如,为避免使系统超负荷,重新分段可能不需要完全最大化RAID设备的评分。重新分段还可标记失效的RAID设备以便于不再尝试它们。
重新分段可识别新的磁盘,创建利用附加空间的新RAID设备,以及因此移动数据。在该过程结束后,用户数据和空闲空间可跨包括初始磁盘和附加磁盘的所有磁盘驱动器分布。注意,重新分段可替换RAID设备而非扩展它们。可以理解,任何给定磁盘上空闲空间的设置和用户分配可以是任意的,且图1到图3以及剩下的图5示出的安排用于说明目的。
用于重新分段的RAID设备的选择
在一实施例中,如前所讨论地,重新分段可处理:
·添加驱动器-在附加驱动器被添加到磁盘驱动器系统时,重新分段可标识使用次优数量驱动器的RAID设备。可创建新的RAID设备并可移动数据。原始RAID设备可被除去。
·去除驱动器-重新分段可检测磁盘驱动器何时已被标记以供去除。属于这些驱动器的RAID设备可成为去除的候选,去除可以以与添加驱动器基本类似的方式完成。
·RAID参数改变-诸如RAID级别、条带内的磁盘数量以及广度大小之类的RAID参数可由用户改变以改进性能。重新分段可将所需参数与初始参数进行对比,并选择非最优RAID设备以供迁移和/或去除。
在一些包括具有更大、更多复杂系统的实施例中,为获得所需的最终配置应使用哪组迁移操作或者是否可能在现有资源内获得从初始配置到最终所需的配置可能不是显而易见的。在一实施例中,评分和优化技术可用来选择特定RAID设备以供去除和替换。在示例性实施例中的评分功能可采用以下特性中的一个或多个:
·跨多个磁盘驱动器的RAID设备可以是优选的。
·在同类磁盘驱动器组上构建的RAID设备可以是优选的。磁盘驱动器可被分类以便支持此功能,且无需一致才属于同一分类。
·匹配所需最终配置的参数(RAID级别、条带大小、磁盘区域等)的RAID设备可以是优选的。
·在物理全异磁盘驱动器上放置冗余数据的RAID设备可以是优选的。示例可包括分开外壳内的、分开通信路径上的、或具有独立电源的磁盘驱动器。
在另一实施例中,重新分段可被分成三个部分,诸如评分、检查和移动。RAID设备评分可用来基于所请求参数和可用磁盘空间确定给定RAID设备的质量。在一实施例中,评分可生成三个值。重新分段可提供初始RAID设备的评分和两个可能备选RAID设备的评分,其在此被称为替换和覆盖评分。以下描述用于一实施例的各个评分的详情:
·评分-处于其当前状态的RAID设备的评分。在一可能实施例中,评分可以是由RAID设备使用的有较少碎片和参数问题的磁盘的数量。参见例如表1。在可选实施例中,评分可以以任何适当方式计算。
·替换评分-可从现有空闲空间构建的RAID设备的最大评分。替换评分可高于、低于或等于RAID设备的评分。
·覆盖评分-当前RAID设备被去除时的RAID设备的最大评分。覆盖评分可高于、低于或等于RAID设备的评分。在一些实施例中,诸如在磁盘是满的情况下可能需要覆盖评分,以确定是否可使用已被当前RAID设备分配的空间来创建更佳RAID设备。
关于替换和覆盖评分,在磁盘数量改变时,RAID设备的用户可访问存储块可保持相同。三种评分可提供输入参数以形成用于从较低评分RAID设备迁移到较高评分RAID设备的策略。在特定实施例中,如果替换评分高于初始评分,则类似图1和图2所述的直接迁移可以是可能的。如果覆盖评分优于初始评分,且如果充足的空闲空间可用于一个或多个临时RAID设备,则图3所示的迁移策略可以是可能的。
在一实施例中,用来确定评分的因素可包括以下的一个或多个:
·磁盘文件夹-如果RAID设备使用指定文件夹之外的磁盘,则该RAID设备的评分可被降低。此情况可由于执行动作或在节制使用期间,即其中可提供备用磁盘期间发生。
·磁盘类型-如果RAID设备驻留于错误类型的磁盘上,则RAID设备的评分可被降低。如果磁盘失效且适当类型的备用磁盘不可用,则此情况可能发生。在这种情况下,冗余可维持在“类型纯度”,并可使用另一磁盘类型的备用磁盘。
·使用磁盘的数量-一般而言,较宽RAID设备(例如跨相对更多数量的磁盘驱动器的RAID设备)可以是优选的,且该RAID设备可被给予更高评分。在另一实施例中,可考虑最大宽度以便于建立更多独立的故障域。
·可用磁盘数量-这可用来确定RAID设备的替换和覆盖评分。在一实施例中,可对包括备用磁盘的磁盘检查充分空间以分配替换RAID设备。在其他各实施例中,备用磁盘可被包括在评分确定中。如果空间存在,则替换和覆盖评分可增加。
·磁盘碎片-如果有空闲磁盘空间存在于RAID设备周围,则RAID设备评分可被降低。这可以是通过迁移RAID设备可减少磁盘碎片的重新分段的指示。
·RAID级别-所需RAID级别是否匹配初始RAID级别。这可包括条带内的磁盘数量。
·RAID广度大小-所需RAID设备的广度大小,即每个磁盘的存储块是否匹配初始RAID设备的广度大小。在一实施例中,基于RAID广度大小的确定仅可能降低RAID设备的评分。
表1示出可使用的评分因素的示例实施例。如表1所示,变量可包括等级内磁盘、文件夹内磁盘、RAID级别、RAID重复因子、RAID广度大小、以及条带内RAID驱动器。如用在示例评分因子中的等级内磁盘可通过以下方程式确定:
(等级内磁盘-3*等级外磁盘)*等级内磁盘常数
其中等级内磁盘可以是由RAID设备使用的具有适当等级的磁盘数量,等级外磁盘可以是由RAID设备使用的不具有适当等级的磁盘数量,且等级内磁盘常数可以是乘性常数值。磁盘等级可包括但不限于15K FC、10KFC、SATA等。例如,如果假设RAID设备使用10K FC磁盘,但包括两个SATA磁盘,则等级外磁盘的值为2。如用在示例评分因子中的文件夹内磁盘可通过以下方程式确定:
(文件夹内磁盘-3*文件夹外磁盘)*文件夹内磁盘常数
其中文件夹内磁盘可以是由RAID设备使用的适当磁盘文件夹内的磁盘数量,文件夹外磁盘可以是由RAID设备使用的不位于适当磁盘文件夹的磁盘数量,且文件夹内磁盘常数可以是乘性常数值。磁盘文件夹可组织哪些磁盘可由RAID设备使用。磁盘可在任何时间迁移到文件夹对象之内或之外以改变它们的用途。如果磁盘是不合期望的RAID级别,则如在示例评分因子中使用的RAID级别可以是零。RAID重复因子、RAID广度大小以及条带内RAID设备可以是各自除以因子2算得的评分。可以理解,表1示出示例评分因子的一实施例和评分因子如何计算和使用的一实施例。
表1中示出的示例仅用于说明目的,且不是限制性的。任何评分因子或评分因子组可与在此公开的各种实施例一起使用。此外,评分因子或评分因子组可以任何适当方式计算或使用。
表1:示例RAID评分因子
Figure BDA00001907167500151
在另一实施例中,重新分段可检查RAID设备的评分以确定是否可移动任何RAID设备。重新分段可移动具有低于替换或覆盖评分的评分的RAID设备。即,在一实施例中,如果替换和/或覆盖评分大于初始RAID设备评分,则该RAID设备可以是移动候选。在其他实施例中,初始RAID设备可通过任何其他手段或通过用户手动选择等被选择以供迁移,其包括其中初始RAID设备评分高于替换和覆盖评分的情况。重新分段还可确定没有RAID设备应当移动。在另一实施例中,重新分段可从可用RAID设备中选出单个RAID设备来迁移。
如果重新分段标识RAID设备移动,则可进行RAID设备的迁移。在一实施例中,迁移可包括确定必要的临时空间、数据从RAID设备的迁移、初始RAID设备的清除以及临时空间的消除。在另一实施例中,动态存储块体系结构分页池可使用RAID设备,并处理数据从较低得分RAID设备到较高得分RAID设备的移动。
在另一实施例中,重新分段在每一次RAID设备迁移之后可进一步重新评估所有RAID设备的评分,因为磁盘空间的重新分配可改变其他RAID设备的评分。在又一实施例中,所有RAID设备的评分可被周期性地计算。在一些实施例中,重新分段可连续计算RAID设备的评分。在另一实施例中,评分中的最大值可被用来选择RAID设备以供去除和替换。磁滞机制可被用来防止过程变成循环。
RAID设备评分还可处理不同大小的磁盘驱动器。图5示出具有不同大小的磁盘502、504、506、508的示例配置500。图2示出针对图5所示配置的示例RAID设备评分,其包括基于配置500的RAID设备510、512、514、516、518的评分信息。为了简化起见使用相对数量。虽然表2示出与迁移RAID设备候选有关的评分,但是表2不是限制性的且任何评分组合可导致标记供迁移或不作迁移的RAID设备。
表2.RAID示例评分
从上述描述和附图中,本领域普通技术人员可以理解所示出和描述的特定实施例仅用于说明目的而非旨在限制本发明的范围。本领域普通技术人员将会认识到可以有其它特定形式具体化本发明而不背离其精神或本质特征。参考特定实施例的细节不旨在限制本发明的范围。
虽然已参考各优选实施例对本发明进行描述,但是本领域的技术人员将认识到可作形式或细节上的改变而不背离本发明的精神和范围。

Claims (22)

1.一种磁盘驱动器系统中的数据迁移的方法,包括以下步骤:
确定多个数据存储设备中的每一个的初始评分,所述初始评分与处于其当前状态的相应数据存储设备有关;
确定所述多个数据存储设备中的每一个的第二评分,所述第二评分与能从所述磁盘驱动器系统中的存储空间构造的数据存储设备有关;以及
基于所述多个数据存储设备的每一个之间的所述初始评分或所述初始评分和所述第二评分的组合中的至少一个的相对比较来选择数据存储设备来迁移至新数据存储设备。
2.如权利要求1所述的方法,其特征在于,还包括将存储在所选数据存储设备处的数据移至所述新数据存储设备,以及去除所选数据存储设备。
3.如权利要求2所述的方法,其特征在于,所述多个数据存储设备是RAID设备,并且其中评分是基于包括RAID级别、RAID条带大小、RAID广度大小、磁盘分类、磁盘上的位置、磁盘盒、磁盘盒电源、以及到所述磁盘的通信路径的因子中的至少一个分别计算的。
4.如权利要求3所述的方法,其特征在于,所述因子具有变化权重。
5.如权利要求2所述的方法,其特征在于,将存储在所选数据存储设备处的数据移至所述新数据存储设备还包括创建至少一个临时数据存储设备。
6.如权利要求5所述的方法,其特征在于,还包括将存储在所选数据存储设备处的数据移至所述至少一个临时数据存储设备,并在随后从所述临时数据存储设备移至所述新数据存储设备。
7.如权利要求2所述的方法,其特征在于,所选数据存储设备包括初始评分比其第二评分更差的数据存储设备。
8.如权利要求2所述的方法,其特征在于,所选数据存储设备包括具有最差相对初始评分的数据存储设备。
9.如权利要求1所述的方法,其特征在于,所选数据存储设备包括具有最差相对初始评分和第二评分组合的数据存储设备。
10.如权利要求2所述的方法,其特征在于,所选数据存储设备包括具有最差相对初始评分和第二评分组合的数据存储设备。
11.如权利要求1所述的方法,其特征在于,所选数据存储设备包括其相应初始评分与第二评分之间具有最大差的数据存储设备。
12.如权利要求1所述的方法,其特征在于,所述初始评分和所述第二评分基于所述相应数据存储设备的RAID参数。
13.如权利要求1所述的方法,其特征在于,所述初始评分和所述第二评分基于所述相应数据存储设备在所述磁盘驱动器系统上的位置。
14.如权利要求1所述的方法,其特征在于,能从所述磁盘驱动器系统中的存储空间构造的所述数据存储设备是能从现有可用空间构造的数据存储设备。
15.如权利要求1所述的方法,其特征在于,能从所述磁盘驱动器系统中的存储空间构造的所述数据存储设备是能从现有可用磁盘空间与由相应数据存储设备占据的磁盘空间中的至少一部分的组合构造的数据存储设备。
16.一种磁盘驱动器系统,包括:
数据存储子系统;以及
具有至少一个磁盘存储系统控制器的磁盘管理器,所述磁盘存储系统控制器被配置成自动地:
计算所述数据存储子系统的多个数据存储设备中的每一个数据存储设备的初始评分,所述初始评分与处于其当前状态的相应数据存储设备设备有关,并且计算所述数据存储子系统的所述多个数据存储设备中的每一个数据存储设备的第二评分,所述第二评分与能从所述磁盘驱动器系统中的存储空间构造的数据存储设备有关;以及
基于所述多个数据存储设备的每一个之间的所述初始评分或所述初始评分和所述第二评分的组合中的至少一个的相对比较来从所述多个数据存储设备中选择至少一个数据存储设备来迁移至新数据存储设备。
17.如权利要求16所述的磁盘驱动器系统,其特征在于,所述控制器还被配置成将存储在所选数据存储设备处的数据的至少一部分移至所述新数据存储设备,以及去除所选数据存储设备。
18.如权利要求16所述的磁盘驱动器系统,其特征在于,还包括跨所述多个数据存储设备分配虚拟卷。
19.如权利要求16所述的磁盘驱动器系统,其特征在于,所述数据存储设备中的至少一个包括多个虚拟卷的诸部分。
20.如权利要求16所述的磁盘驱动器系统,其特征在于,能从所述磁盘驱动器系统中的存储空间构造的所述数据存储设备是能从现有可用空间构造的数据存储设备。
21.如权利要求1所述的磁盘驱动器系统,其特征在于,能从所述磁盘驱动器系统中的存储空间构造的所述数据存储设备是能从现有可用磁盘空间与由相应数据存储设备占据的磁盘空间中的至少一部分的组合构造的数据存储设备。
22.一种磁盘驱动器系统,包括:
RAID子系统;以及
具有至少一个磁盘存储系统控制器的磁盘管理器,所述磁盘存储系统控制器被配置成自动地:
基于针对多个RAID设备中的每一个算得的初始评分与至少一个第二评分之间的比较从所述多个RAID设备中选择RAID设备,其中所述初始评分与处于其当前状态的RAID设备有关,并且是基于一个或多个评分因子来计算的,并且所述至少一个第二评分与位于可用磁盘空间中的至少一个假定RAID设备有关,并且是基于一个或多个评分因子来计算的;
基于所述至少一个假定RAID设备来创建替换RAID设备;
将存储于所述所选RAID设备中的所述数据的至少一部分迁移到所述替换RAID设备;以及
去除所述所选RAID设备。
CN201210251454.7A 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法 Active CN102880424B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US80804506P 2006-05-24 2006-05-24
US60/808,045 2006-05-24
CN2007800189223A CN101454745B (zh) 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN2007800189223A Division CN101454745B (zh) 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法

Publications (2)

Publication Number Publication Date
CN102880424A true CN102880424A (zh) 2013-01-16
CN102880424B CN102880424B (zh) 2015-10-28

Family

ID=38779352

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201210251454.7A Active CN102880424B (zh) 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法
CN2007800189223A Active CN101454745B (zh) 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN2007800189223A Active CN101454745B (zh) 2006-05-24 2007-05-24 用于raid管理、重新分配以及重新分段的系统和方法

Country Status (5)

Country Link
US (4) US7886111B2 (zh)
EP (2) EP2021904A2 (zh)
JP (2) JP5048760B2 (zh)
CN (2) CN102880424B (zh)
WO (1) WO2007140260A2 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111858188A (zh) * 2019-04-29 2020-10-30 伊姆西Ip控股有限责任公司 存储管理的方法、设备和计算机程序产品

Families Citing this family (277)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8010829B1 (en) 2005-10-20 2011-08-30 American Megatrends, Inc. Distributed hot-spare storage in a storage cluster
US7721044B1 (en) * 2005-10-20 2010-05-18 American Megatrends, Inc. Expanding the storage capacity of a virtualized data storage system
US7996608B1 (en) 2005-10-20 2011-08-09 American Megatrends, Inc. Providing redundancy in a storage system
US8010485B1 (en) 2005-10-20 2011-08-30 American Megatrends, Inc. Background movement of data between nodes in a storage cluster
US7778960B1 (en) 2005-10-20 2010-08-17 American Megatrends, Inc. Background movement of data between nodes in a storage cluster
JP5048760B2 (ja) 2006-05-24 2012-10-17 コンペレント・テクノロジーズ Raid管理、再割振り、およびリストライピングのためのシステムおよび方法
US7908448B1 (en) 2007-01-30 2011-03-15 American Megatrends, Inc. Maintaining data consistency in mirrored cluster storage systems with write-back cache
JP4958739B2 (ja) 2007-11-09 2012-06-20 株式会社日立製作所 障害の発生した記憶装置に記憶されているデータを修復するストレージシステム
TWI346944B (en) * 2007-12-31 2011-08-11 Qnap Systems Inc Method of raid level migration and system for the same
JP5075699B2 (ja) * 2008-03-21 2012-11-21 株式会社日立製作所 ストレージ容量拡張方法及びその方法を使用するストレージシステム
EP2304568B1 (en) * 2008-06-06 2013-08-14 Pivot3 Method and system for distributed raid implementation
US8219750B2 (en) * 2008-06-30 2012-07-10 Pivot3 Method and system for execution of applications in conjunction with distributed RAID
JP5302582B2 (ja) * 2008-07-09 2013-10-02 株式会社日立製作所 上位装置から指定されるデバイスに関する記憶容量を変更するストレージシステム及び方法
US20100030960A1 (en) * 2008-07-31 2010-02-04 Hariharan Kamalavannan Raid across virtual drives
US8799571B1 (en) * 2008-09-26 2014-08-05 Emc Corporation System and method for configuring a device array upon detecting addition of a storage device
US8234316B2 (en) * 2008-09-30 2012-07-31 Microsoft Corporation Nested file system support
US8176247B2 (en) 2008-10-28 2012-05-08 Pivot3 Method and system for protecting against multiple failures in a RAID system
JP4727705B2 (ja) * 2008-10-31 2011-07-20 株式会社日立製作所 階層型ストレージシステム
JP2010122814A (ja) * 2008-11-18 2010-06-03 Hitachi Ltd ストレージシステム及びストレージシステムの運用方法
US8874867B2 (en) * 2008-11-21 2014-10-28 Lsi Corporation Identification and containment of performance hot-spots in virtual volumes
US20100191907A1 (en) * 2009-01-26 2010-07-29 Lsi Corporation RAID Converter and Methods for Transforming a First RAID Array to a Second RAID Array Without Creating a Backup Copy
US8161076B1 (en) * 2009-04-02 2012-04-17 Netapp, Inc. Generation and use of a data structure for distributing responsibilities among multiple resources in a network storage system
US8195877B2 (en) * 2009-04-29 2012-06-05 Hewlett Packard Development Company, L.P. Changing the redundancy protection for data associated with a file
JP2013501293A (ja) * 2009-08-04 2013-01-10 アクサナ・(イスラエル)・リミテッド 遠隔データミラーリングシステムにおけるデータギャップ管理
CN102043589B (zh) * 2009-10-20 2013-01-02 成都市华为赛门铁克科技有限公司 磁盘阵列的扩容方法和系统
JP5532982B2 (ja) * 2010-02-03 2014-06-25 富士通株式会社 ストレージ装置、ストレージ装置のコントローラおよびストレージ装置の記憶領域割当方法
US8671265B2 (en) 2010-03-05 2014-03-11 Solidfire, Inc. Distributed data storage system providing de-duplication of data using block identifiers
US11614893B2 (en) 2010-09-15 2023-03-28 Pure Storage, Inc. Optimizing storage device access based on latency
CN102446072B (zh) 2010-10-07 2014-11-19 国际商业机器公司 用于池式存储中的raid 阵列变换的系统和方法
WO2012045529A1 (en) * 2010-10-07 2012-04-12 International Business Machines Corporation Raid array transformation
US11061597B2 (en) * 2010-11-09 2021-07-13 Pure Storage, Inc. Supporting live migrations and re-balancing with a virtual storage unit
CN102033717B (zh) * 2010-12-07 2013-05-08 清华大学 基于磁盘阵列的数据存储方法及系统
US8627033B2 (en) * 2010-12-20 2014-01-07 Microsoft Corporation Storage device migration and redirection
US8818948B2 (en) * 2011-04-06 2014-08-26 Unisys Corporation Dynamic disk redistribution
US8527699B2 (en) 2011-04-25 2013-09-03 Pivot3, Inc. Method and system for distributed RAID implementation
US8589640B2 (en) 2011-10-14 2013-11-19 Pure Storage, Inc. Method for maintaining multiple fingerprint tables in a deduplicating storage system
US9335928B2 (en) * 2011-10-01 2016-05-10 International Business Machines Corporation Using unused portion of the storage space of physical storage devices configured as a RAID
US9836340B2 (en) * 2011-10-03 2017-12-05 International Business Machines Corporation Safe management of data storage using a volume manager
US9817733B2 (en) * 2011-10-05 2017-11-14 International Business Machines Corporation Resource recovery for checkpoint-based high-availability in a virtualized environment
US9015411B2 (en) * 2011-12-02 2015-04-21 Compellent Technologies System and method for unbalanced raid management
US9054992B2 (en) 2011-12-27 2015-06-09 Solidfire, Inc. Quality of service policy sets
US9838269B2 (en) 2011-12-27 2017-12-05 Netapp, Inc. Proportional quality of service based on client usage and system metrics
US20130179634A1 (en) * 2012-01-05 2013-07-11 Lsi Corporation Systems and methods for idle time backup of storage system volumes
WO2013157032A1 (en) * 2012-04-16 2013-10-24 Hitachi, Ltd. Storage subsystem and data management method of storage subsystem
CN104508646A (zh) * 2012-06-08 2015-04-08 惠普发展公司,有限责任合伙企业 访问存储器
GB2503274A (en) 2012-06-22 2013-12-25 Ibm Restoring redundancy in a RAID
US10037271B1 (en) * 2012-06-27 2018-07-31 Teradata Us, Inc. Data-temperature-based control of buffer cache memory in a database system
US8914578B2 (en) * 2012-09-27 2014-12-16 Hewlett-Packard Development Company, L.P. Capacity-expansion of a logical volume
CA2891355C (en) * 2012-11-20 2022-04-05 Charles I. Peddle Solid state drive architectures
US11037625B2 (en) 2012-11-20 2021-06-15 Thstyme Bermuda Limited Solid state drive architectures
US20150286531A1 (en) * 2012-12-20 2015-10-08 Hewlett-Packard Development Company, L.P. Raid storage processing
US9778884B2 (en) * 2013-03-13 2017-10-03 Hewlett Packard Enterprise Development Lp Virtual storage pool
JP6142599B2 (ja) * 2013-03-18 2017-06-07 富士通株式会社 ストレージシステム、ストレージ装置および制御プログラム
US9201662B2 (en) * 2013-03-29 2015-12-01 Dell Products, Lp System and method for pre-operating system memory map management to minimize operating system failures
US20140297953A1 (en) * 2013-03-31 2014-10-02 Microsoft Corporation Removable Storage Device Identity and Configuration Information
US9836413B2 (en) * 2013-04-03 2017-12-05 International Business Machines Corporation Maintaining cache consistency in a cache for cache eviction policies supporting dependencies
US9542126B2 (en) 2013-04-22 2017-01-10 Avago Technologies General Ip (Singapore) Pte. Ltd. Redundant array of independent disks systems that utilize spans with different storage device counts for a logical volume
US9268502B2 (en) 2013-09-16 2016-02-23 Netapp, Inc. Dense tree volume metadata organization
US9405783B2 (en) 2013-10-02 2016-08-02 Netapp, Inc. Extent hashing technique for distributed storage architecture
US9152684B2 (en) 2013-11-12 2015-10-06 Netapp, Inc. Snapshots and clones of volumes in a storage system
US9201918B2 (en) 2013-11-19 2015-12-01 Netapp, Inc. Dense tree volume metadata update logging and checkpointing
US9824020B2 (en) * 2013-12-30 2017-11-21 Unisys Corporation Systems and methods for memory management in a dynamic translation computer system
US9170746B2 (en) 2014-01-07 2015-10-27 Netapp, Inc. Clustered raid assimilation management
US9251064B2 (en) 2014-01-08 2016-02-02 Netapp, Inc. NVRAM caching and logging in a storage system
US9448924B2 (en) 2014-01-08 2016-09-20 Netapp, Inc. Flash optimized, log-structured layer of a file system
US9529546B2 (en) 2014-01-08 2016-12-27 Netapp, Inc. Global in-line extent-based deduplication
US9152330B2 (en) 2014-01-09 2015-10-06 Netapp, Inc. NVRAM data organization using self-describing entities for predictable recovery after power-loss
US9268653B2 (en) 2014-01-17 2016-02-23 Netapp, Inc. Extent metadata update logging and checkpointing
US9454434B2 (en) 2014-01-17 2016-09-27 Netapp, Inc. File system driven raid rebuild technique
US9256549B2 (en) 2014-01-17 2016-02-09 Netapp, Inc. Set-associative hash table organization for efficient storage and retrieval of data in a storage system
US9483349B2 (en) 2014-01-17 2016-11-01 Netapp, Inc. Clustered raid data organization
US8949692B1 (en) * 2014-01-23 2015-02-03 DSSD, Inc. Method and system for service-aware parity placement in a storage system
WO2015116077A1 (en) * 2014-01-30 2015-08-06 Hewlett-Packard Development Company, L.P. Access controlled memory region
WO2015116078A1 (en) * 2014-01-30 2015-08-06 Hewlett-Packard Development Company, L.P. Memory data versioning
US20150244795A1 (en) 2014-02-21 2015-08-27 Solidfire, Inc. Data syncing in a distributed system
US9612952B2 (en) * 2014-06-04 2017-04-04 Pure Storage, Inc. Automatically reconfiguring a storage memory topology
US9213485B1 (en) 2014-06-04 2015-12-15 Pure Storage, Inc. Storage system architecture
US9836234B2 (en) 2014-06-04 2017-12-05 Pure Storage, Inc. Storage cluster
US11399063B2 (en) 2014-06-04 2022-07-26 Pure Storage, Inc. Network authentication for a storage system
US11068363B1 (en) 2014-06-04 2021-07-20 Pure Storage, Inc. Proactively rebuilding data in a storage cluster
US9367243B1 (en) 2014-06-04 2016-06-14 Pure Storage, Inc. Scalable non-uniform storage sizes
US9218244B1 (en) 2014-06-04 2015-12-22 Pure Storage, Inc. Rebuilding data across storage nodes
US11652884B2 (en) 2014-06-04 2023-05-16 Pure Storage, Inc. Customized hash algorithms
US10574754B1 (en) 2014-06-04 2020-02-25 Pure Storage, Inc. Multi-chassis array with multi-level load balancing
US9003144B1 (en) 2014-06-04 2015-04-07 Pure Storage, Inc. Mechanism for persisting messages in a storage system
US8850108B1 (en) 2014-06-04 2014-09-30 Pure Storage, Inc. Storage cluster
US9836245B2 (en) 2014-07-02 2017-12-05 Pure Storage, Inc. Non-volatile RAM and flash memory in a non-volatile solid-state storage
US8868825B1 (en) 2014-07-02 2014-10-21 Pure Storage, Inc. Nonrepeating identifiers in an address space of a non-volatile solid-state storage
US11604598B2 (en) 2014-07-02 2023-03-14 Pure Storage, Inc. Storage cluster with zoned drives
US10114757B2 (en) 2014-07-02 2018-10-30 Pure Storage, Inc. Nonrepeating identifiers in an address space of a non-volatile solid-state storage
US9021297B1 (en) 2014-07-02 2015-04-28 Pure Storage, Inc. Redundant, fault-tolerant, distributed remote procedure call cache in a storage system
US11886308B2 (en) 2014-07-02 2024-01-30 Pure Storage, Inc. Dual class of service for unified file and object messaging
US9811677B2 (en) 2014-07-03 2017-11-07 Pure Storage, Inc. Secure data replication in a storage grid
US10853311B1 (en) 2014-07-03 2020-12-01 Pure Storage, Inc. Administration through files in a storage system
US8874836B1 (en) 2014-07-03 2014-10-28 Pure Storage, Inc. Scheduling policy for queues in a non-volatile solid-state storage
US9747229B1 (en) 2014-07-03 2017-08-29 Pure Storage, Inc. Self-describing data format for DMA in a non-volatile solid-state storage
US9798728B2 (en) 2014-07-24 2017-10-24 Netapp, Inc. System performing data deduplication using a dense tree data structure
TWI552162B (zh) * 2014-07-31 2016-10-01 Zhi-Cheng Xiao Low power memory
US9495255B2 (en) 2014-08-07 2016-11-15 Pure Storage, Inc. Error recovery in a storage cluster
US9766972B2 (en) 2014-08-07 2017-09-19 Pure Storage, Inc. Masking defective bits in a storage array
US9483346B2 (en) 2014-08-07 2016-11-01 Pure Storage, Inc. Data rebuild on feedback from a queue in a non-volatile solid-state storage
US10983859B2 (en) 2014-08-07 2021-04-20 Pure Storage, Inc. Adjustable error correction based on memory health in a storage unit
US9558069B2 (en) 2014-08-07 2017-01-31 Pure Storage, Inc. Failure mapping in a storage array
US9082512B1 (en) 2014-08-07 2015-07-14 Pure Storage, Inc. Die-level monitoring in a storage cluster
US10079711B1 (en) 2014-08-20 2018-09-18 Pure Storage, Inc. Virtual file server with preserved MAC address
US9501359B2 (en) 2014-09-10 2016-11-22 Netapp, Inc. Reconstruction of dense tree volume metadata state across crash recovery
US9524103B2 (en) 2014-09-10 2016-12-20 Netapp, Inc. Technique for quantifying logical space trapped in an extent store
US9671960B2 (en) 2014-09-12 2017-06-06 Netapp, Inc. Rate matching technique for balancing segment cleaning and I/O workload
US10133511B2 (en) 2014-09-12 2018-11-20 Netapp, Inc Optimized segment cleaning technique
US20160080490A1 (en) * 2014-09-15 2016-03-17 Microsoft Corporation Online data movement without compromising data integrity
KR102177421B1 (ko) 2014-10-15 2020-11-11 삼성전자주식회사 데이터 저장 시스템, 데이터 저장 장치 및 raid 컨트롤러
US9535619B2 (en) * 2014-11-10 2017-01-03 Dell Products, Lp Enhanced reconstruction in an array of information storage devices by physical disk reduction without losing data
US9836229B2 (en) 2014-11-18 2017-12-05 Netapp, Inc. N-way merge technique for updating volume metadata in a storage I/O stack
CN107003882B (zh) * 2014-12-18 2020-12-29 英特尔公司 用于转换高速缓存闭包和持久快照的方法、系统和装置
CN105518741B (zh) 2014-12-23 2019-04-09 英特尔公司 用于管理虚拟图形处理器单元的装置和方法
US10013359B2 (en) * 2014-12-24 2018-07-03 University Of New Hampshire Redundant disk array storage system and method using heterogeneous disks and a lookup table
US9720601B2 (en) 2015-02-11 2017-08-01 Netapp, Inc. Load balancing technique for a storage array
US9948615B1 (en) 2015-03-16 2018-04-17 Pure Storage, Inc. Increased storage unit encryption based on loss of trust
US11294893B2 (en) 2015-03-20 2022-04-05 Pure Storage, Inc. Aggregation of queries
US9762460B2 (en) 2015-03-24 2017-09-12 Netapp, Inc. Providing continuous context for operational information of a storage system
US9940234B2 (en) 2015-03-26 2018-04-10 Pure Storage, Inc. Aggressive data deduplication using lazy garbage collection
US10082985B2 (en) 2015-03-27 2018-09-25 Pure Storage, Inc. Data striping across storage nodes that are assigned to multiple logical arrays
US9710317B2 (en) 2015-03-30 2017-07-18 Netapp, Inc. Methods to identify, handle and recover from suspect SSDS in a clustered flash array
US10178169B2 (en) 2015-04-09 2019-01-08 Pure Storage, Inc. Point to point based backend communication layer for storage processing
US9672125B2 (en) 2015-04-10 2017-06-06 Pure Storage, Inc. Ability to partition an array into two or more logical arrays with independently running software
US10140149B1 (en) 2015-05-19 2018-11-27 Pure Storage, Inc. Transactional commits with hardware assists in remote memory
US9817576B2 (en) 2015-05-27 2017-11-14 Pure Storage, Inc. Parallel update to NVRAM
US9875037B2 (en) * 2015-06-18 2018-01-23 International Business Machines Corporation Implementing multiple raid level configurations in a data storage device
US10846275B2 (en) 2015-06-26 2020-11-24 Pure Storage, Inc. Key management in a storage device
US10983732B2 (en) 2015-07-13 2021-04-20 Pure Storage, Inc. Method and system for accessing a file
US11232079B2 (en) 2015-07-16 2022-01-25 Pure Storage, Inc. Efficient distribution of large directories
US10229004B2 (en) * 2015-07-31 2019-03-12 International Business Machines Corporation Data transfer priority levels
US10565230B2 (en) 2015-07-31 2020-02-18 Netapp, Inc. Technique for preserving efficiency for replication between clusters of a network
US9740566B2 (en) 2015-07-31 2017-08-22 Netapp, Inc. Snapshot creation workflow
US10394660B2 (en) 2015-07-31 2019-08-27 Netapp, Inc. Snapshot restore workflow
US10108355B2 (en) 2015-09-01 2018-10-23 Pure Storage, Inc. Erase block state detection
US11341136B2 (en) 2015-09-04 2022-05-24 Pure Storage, Inc. Dynamically resizable structures for approximate membership queries
US9785525B2 (en) 2015-09-24 2017-10-10 Netapp, Inc. High availability failover manager
US9946512B2 (en) * 2015-09-25 2018-04-17 International Business Machines Corporation Adaptive radix external in-place radix sort
US9760290B2 (en) * 2015-09-25 2017-09-12 International Business Machines Corporation Smart volume manager for storage space usage optimization
US10762069B2 (en) 2015-09-30 2020-09-01 Pure Storage, Inc. Mechanism for a system where data and metadata are located closely together
US10853266B2 (en) 2015-09-30 2020-12-01 Pure Storage, Inc. Hardware assisted data lookup methods
US9768953B2 (en) 2015-09-30 2017-09-19 Pure Storage, Inc. Resharing of a split secret
US20170097771A1 (en) 2015-10-01 2017-04-06 Netapp, Inc. Transaction log layout for efficient reclamation and recovery
US9843453B2 (en) 2015-10-23 2017-12-12 Pure Storage, Inc. Authorizing I/O commands with I/O tokens
US9836366B2 (en) 2015-10-27 2017-12-05 Netapp, Inc. Third vote consensus in a cluster using shared storage devices
US10235059B2 (en) 2015-12-01 2019-03-19 Netapp, Inc. Technique for maintaining consistent I/O processing throughput in a storage system
US10229009B2 (en) 2015-12-16 2019-03-12 Netapp, Inc. Optimized file system layout for distributed consensus protocol
US10007457B2 (en) 2015-12-22 2018-06-26 Pure Storage, Inc. Distributed transactions with token-associated execution
US10379973B2 (en) * 2015-12-28 2019-08-13 Red Hat, Inc. Allocating storage in a distributed storage system
US9830103B2 (en) 2016-01-05 2017-11-28 Netapp, Inc. Technique for recovery of trapped storage space in an extent store
US10108547B2 (en) 2016-01-06 2018-10-23 Netapp, Inc. High performance and memory efficient metadata caching
US9846539B2 (en) 2016-01-22 2017-12-19 Netapp, Inc. Recovery from low space condition of an extent store
WO2017130022A1 (en) 2016-01-26 2017-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Method for adding storage devices to a data storage system with diagonally replicated data storage blocks
US10579540B2 (en) * 2016-01-29 2020-03-03 Netapp, Inc. Raid data migration through stripe swapping
TWI587217B (zh) * 2016-03-07 2017-06-11 威聯通科技股份有限公司 電子裝置及擴增其儲存容量的方法
US9921757B1 (en) * 2016-03-31 2018-03-20 EMC IP Holding Company LLC Using an FPGA for integration with low-latency, non-volatile memory
US10929022B2 (en) 2016-04-25 2021-02-23 Netapp. Inc. Space savings reporting for storage system supporting snapshot and clones
US10635344B2 (en) 2016-04-27 2020-04-28 International Business Machines Corporation Dynamic spare storage allocation by creating logical volumes from unused space allocated for user data of a raid storage
US9952767B2 (en) 2016-04-29 2018-04-24 Netapp, Inc. Consistency group management
US10261690B1 (en) 2016-05-03 2019-04-16 Pure Storage, Inc. Systems and methods for operating a storage system
US11231858B2 (en) 2016-05-19 2022-01-25 Pure Storage, Inc. Dynamically configuring a storage system to facilitate independent scaling of resources
US10691567B2 (en) 2016-06-03 2020-06-23 Pure Storage, Inc. Dynamically forming a failure domain in a storage system that includes a plurality of blades
US10296460B2 (en) * 2016-06-29 2019-05-21 Oracle International Corporation Prefetch bandwidth throttling by dynamically adjusting miss buffer prefetch-dropping thresholds
US11861188B2 (en) 2016-07-19 2024-01-02 Pure Storage, Inc. System having modular accelerators
US11706895B2 (en) 2016-07-19 2023-07-18 Pure Storage, Inc. Independent scaling of compute resources and storage resources in a storage system
US11449232B1 (en) 2016-07-22 2022-09-20 Pure Storage, Inc. Optimal scheduling of flash operations
US10768819B2 (en) 2016-07-22 2020-09-08 Pure Storage, Inc. Hardware support for non-disruptive upgrades
US9672905B1 (en) 2016-07-22 2017-06-06 Pure Storage, Inc. Optimize data protection layouts based on distributed flash wear leveling
US11080155B2 (en) 2016-07-24 2021-08-03 Pure Storage, Inc. Identifying error types among flash memory
US10216420B1 (en) 2016-07-24 2019-02-26 Pure Storage, Inc. Calibration of flash channels in SSD
US11604690B2 (en) 2016-07-24 2023-03-14 Pure Storage, Inc. Online failure span determination
US10366004B2 (en) 2016-07-26 2019-07-30 Pure Storage, Inc. Storage system with elective garbage collection to reduce flash contention
US11886334B2 (en) 2016-07-26 2024-01-30 Pure Storage, Inc. Optimizing spool and memory space management
US11797212B2 (en) 2016-07-26 2023-10-24 Pure Storage, Inc. Data migration for zoned drives
US11734169B2 (en) 2016-07-26 2023-08-22 Pure Storage, Inc. Optimizing spool and memory space management
US10203903B2 (en) 2016-07-26 2019-02-12 Pure Storage, Inc. Geometry based, space aware shelf/writegroup evacuation
CN106371771B (zh) * 2016-09-13 2020-03-06 苏州浪潮智能科技有限公司 一种存储系统中磁盘管理方法及系统
US11422719B2 (en) 2016-09-15 2022-08-23 Pure Storage, Inc. Distributed file deletion and truncation
US10642763B2 (en) 2016-09-20 2020-05-05 Netapp, Inc. Quality of service policy sets
CN107870730B (zh) * 2016-09-23 2020-11-20 伊姆西Ip控股有限责任公司 用于管理存储系统的方法和系统
US9747039B1 (en) 2016-10-04 2017-08-29 Pure Storage, Inc. Reservations over multiple paths on NVMe over fabrics
US10756816B1 (en) 2016-10-04 2020-08-25 Pure Storage, Inc. Optimized fibre channel and non-volatile memory express access
KR20180051703A (ko) 2016-11-07 2018-05-17 삼성전자주식회사 Raid 방식으로 데이터를 저장하는 스토리지 장치
US10620983B2 (en) 2016-11-08 2020-04-14 International Business Machines Corporation Memory stripe with selectable size
US10235202B2 (en) 2016-11-08 2019-03-19 International Business Machines Corporation Thread interrupt offload re-prioritization
US11550481B2 (en) 2016-12-19 2023-01-10 Pure Storage, Inc. Efficiently writing data in a zoned drive storage system
US11307998B2 (en) 2017-01-09 2022-04-19 Pure Storage, Inc. Storage efficiency of encrypted host system data
US9747158B1 (en) 2017-01-13 2017-08-29 Pure Storage, Inc. Intelligent refresh of 3D NAND
US11955187B2 (en) 2017-01-13 2024-04-09 Pure Storage, Inc. Refresh of differing capacity NAND
US10979223B2 (en) 2017-01-31 2021-04-13 Pure Storage, Inc. Separate encryption for a solid-state drive
US10528488B1 (en) 2017-03-30 2020-01-07 Pure Storage, Inc. Efficient name coding
US11016667B1 (en) 2017-04-05 2021-05-25 Pure Storage, Inc. Efficient mapping for LUNs in storage memory with holes in address space
US10146624B1 (en) * 2017-04-24 2018-12-04 EMC IP Holding Company LLC Disk extent rebalancing in mapped RAID storage arrays
US10141050B1 (en) 2017-04-27 2018-11-27 Pure Storage, Inc. Page writes for triple level cell flash memory
WO2018199794A1 (en) * 2017-04-27 2018-11-01 EMC IP Holding Company LLC Re-placing data within a mapped-raid environment
US10944671B2 (en) 2017-04-27 2021-03-09 Pure Storage, Inc. Efficient data forwarding in a networked device
US10516645B1 (en) 2017-04-27 2019-12-24 Pure Storage, Inc. Address resolution broadcasting in a networked device
US11099983B2 (en) 2017-04-27 2021-08-24 EMC IP Holding Company LLC Consolidating temporally-related data within log-based storage
WO2018199795A1 (en) 2017-04-27 2018-11-01 EMC IP Holding Company LLC Best-effort deduplication of data
US10146459B1 (en) 2017-04-28 2018-12-04 EMC IP Holding Company LLC Disk activity balancing in mapped raid storage arrays by data remapping
US11467913B1 (en) 2017-06-07 2022-10-11 Pure Storage, Inc. Snapshots with crash consistency in a storage system
US11782625B2 (en) 2017-06-11 2023-10-10 Pure Storage, Inc. Heterogeneity supportive resiliency groups
US11138103B1 (en) 2017-06-11 2021-10-05 Pure Storage, Inc. Resiliency groups
US11947814B2 (en) 2017-06-11 2024-04-02 Pure Storage, Inc. Optimizing resiliency group formation stability
US10425473B1 (en) 2017-07-03 2019-09-24 Pure Storage, Inc. Stateful connection reset in a storage cluster with a stateless load balancer
WO2019022631A1 (en) 2017-07-27 2019-01-31 EMC IP Holding Company LLC STORING DATA IN DIFFERENTLY SIZED WAFERS WITHIN DIFFERENT STORAGE LEVELS
US10402266B1 (en) 2017-07-31 2019-09-03 Pure Storage, Inc. Redundant array of independent disks in a direct-mapped flash storage system
US10782894B1 (en) * 2017-07-31 2020-09-22 EMC IP Holding Company, LLC Reducing overlap through shuffle and keeping relationship balance on mapped RAID system and method
US10210926B1 (en) 2017-09-15 2019-02-19 Pure Storage, Inc. Tracking of optimum read voltage thresholds in nand flash devices
US10877827B2 (en) 2017-09-15 2020-12-29 Pure Storage, Inc. Read voltage optimization
WO2019083391A1 (en) 2017-10-26 2019-05-02 EMC IP Holding Company LLC ACCORDING DATA STORAGE EQUIPMENT
WO2019083389A1 (en) 2017-10-26 2019-05-02 EMC IP Holding Company LLC MANAGING A FILE SYSTEM IN MULTIPLE LOGIC UNIT NUMBERS (LUN)
US10545687B1 (en) 2017-10-31 2020-01-28 Pure Storage, Inc. Data rebuild when changing erase block sizes during drive replacement
US10515701B1 (en) 2017-10-31 2019-12-24 Pure Storage, Inc. Overlapping raid groups
US10496330B1 (en) 2017-10-31 2019-12-03 Pure Storage, Inc. Using flash storage devices with different sized erase blocks
US11024390B1 (en) 2017-10-31 2021-06-01 Pure Storage, Inc. Overlapping RAID groups
US10884919B2 (en) 2017-10-31 2021-01-05 Pure Storage, Inc. Memory management in a storage system
US10860475B1 (en) 2017-11-17 2020-12-08 Pure Storage, Inc. Hybrid flash translation layer
US10990566B1 (en) 2017-11-20 2021-04-27 Pure Storage, Inc. Persistent file locks in a storage system
US10719265B1 (en) 2017-12-08 2020-07-21 Pure Storage, Inc. Centralized, quorum-aware handling of device reservation requests in a storage system
US10929053B2 (en) 2017-12-08 2021-02-23 Pure Storage, Inc. Safe destructive actions on drives
US10929031B2 (en) 2017-12-21 2021-02-23 Pure Storage, Inc. Maximizing data reduction in a partially encrypted volume
CN110058789B (zh) * 2018-01-18 2022-06-03 伊姆西Ip控股有限责任公司 用于管理存储系统的方法、存储系统以及计算机程序产品
US10467527B1 (en) 2018-01-31 2019-11-05 Pure Storage, Inc. Method and apparatus for artificial intelligence acceleration
US10733053B1 (en) 2018-01-31 2020-08-04 Pure Storage, Inc. Disaster recovery for high-bandwidth distributed archives
US10976948B1 (en) 2018-01-31 2021-04-13 Pure Storage, Inc. Cluster expansion mechanism
US11036596B1 (en) 2018-02-18 2021-06-15 Pure Storage, Inc. System for delaying acknowledgements on open NAND locations until durability has been confirmed
US11494109B1 (en) 2018-02-22 2022-11-08 Pure Storage, Inc. Erase block trimming for heterogenous flash memory storage devices
US10853146B1 (en) 2018-04-27 2020-12-01 Pure Storage, Inc. Efficient data forwarding in a networked device
US11385792B2 (en) 2018-04-27 2022-07-12 Pure Storage, Inc. High availability controller pair transitioning
US10931450B1 (en) 2018-04-27 2021-02-23 Pure Storage, Inc. Distributed, lock-free 2-phase commit of secret shares using multiple stateless controllers
US11436023B2 (en) 2018-05-31 2022-09-06 Pure Storage, Inc. Mechanism for updating host file system and flash translation layer based on underlying NAND technology
CN108762689B (zh) * 2018-06-14 2020-09-25 苏州浪潮智能科技有限公司 一种自动创建磁盘阵列的方法、装置、设备及存储介质
CN110737390B (zh) * 2018-07-20 2023-08-18 伊姆西Ip控股有限责任公司 用于管理存储系统的方法、设备和计算机程序产品
US11438279B2 (en) 2018-07-23 2022-09-06 Pure Storage, Inc. Non-disruptive conversion of a clustered service from single-chassis to multi-chassis
US11055008B2 (en) * 2018-08-02 2021-07-06 EMC IP Holding Company LLC Managing wear balancing in mapped RAID storage systems
US11354058B2 (en) 2018-09-06 2022-06-07 Pure Storage, Inc. Local relocation of data stored at a storage device of a storage system
US11868309B2 (en) 2018-09-06 2024-01-09 Pure Storage, Inc. Queue management for data relocation
US11500570B2 (en) 2018-09-06 2022-11-15 Pure Storage, Inc. Efficient relocation of data utilizing different programming modes
US11520514B2 (en) 2018-09-06 2022-12-06 Pure Storage, Inc. Optimized relocation of data based on data characteristics
US10454498B1 (en) 2018-10-18 2019-10-22 Pure Storage, Inc. Fully pipelined hardware engine design for fast and efficient inline lossless data compression
US10976947B2 (en) 2018-10-26 2021-04-13 Pure Storage, Inc. Dynamically selecting segment heights in a heterogeneous RAID group
US11334254B2 (en) 2019-03-29 2022-05-17 Pure Storage, Inc. Reliability based flash page sizing
US11775189B2 (en) 2019-04-03 2023-10-03 Pure Storage, Inc. Segment level heterogeneity
US11099986B2 (en) 2019-04-12 2021-08-24 Pure Storage, Inc. Efficient transfer of memory contents
US10929037B2 (en) 2019-06-15 2021-02-23 International Business Machines Corporation Converting a RAID to a more robust RAID level
US11074118B2 (en) 2019-06-15 2021-07-27 International Business Machines Corporation Reporting incidents of data loss in RAID arrays
US11442826B2 (en) 2019-06-15 2022-09-13 International Business Machines Corporation Reducing incidents of data loss in raid arrays having the same raid level
US11714572B2 (en) 2019-06-19 2023-08-01 Pure Storage, Inc. Optimized data resiliency in a modular storage system
US11281394B2 (en) 2019-06-24 2022-03-22 Pure Storage, Inc. Replication across partitioning schemes in a distributed storage system
JP2021015461A (ja) * 2019-07-12 2021-02-12 株式会社日立製作所 ストレージ装置およびストレージ管理方法
CN112306372A (zh) 2019-07-31 2021-02-02 伊姆西Ip控股有限责任公司 用于处理数据的方法、设备和程序产品
US11893126B2 (en) 2019-10-14 2024-02-06 Pure Storage, Inc. Data deletion for a multi-tenant environment
US11093157B2 (en) * 2019-10-30 2021-08-17 EMC IP Holding Company LLC Method, electronic device and computer program product for storage management
US11847331B2 (en) 2019-12-12 2023-12-19 Pure Storage, Inc. Budgeting open blocks of a storage unit based on power loss prevention
US11416144B2 (en) 2019-12-12 2022-08-16 Pure Storage, Inc. Dynamic use of segment or zone power loss protection in a flash device
US11704192B2 (en) 2019-12-12 2023-07-18 Pure Storage, Inc. Budgeting open blocks based on power loss protection
US11188432B2 (en) 2020-02-28 2021-11-30 Pure Storage, Inc. Data resiliency by partially deallocating data blocks of a storage device
US11321000B2 (en) * 2020-04-13 2022-05-03 Dell Products, L.P. System and method for variable sparing in RAID groups based on drive failure probability
US11507297B2 (en) 2020-04-15 2022-11-22 Pure Storage, Inc. Efficient management of optimal read levels for flash storage systems
US11256587B2 (en) 2020-04-17 2022-02-22 Pure Storage, Inc. Intelligent access to a storage device
US11474986B2 (en) 2020-04-24 2022-10-18 Pure Storage, Inc. Utilizing machine learning to streamline telemetry processing of storage media
US11416338B2 (en) 2020-04-24 2022-08-16 Pure Storage, Inc. Resiliency scheme to enhance storage performance
RU2747213C1 (ru) * 2020-06-24 2021-04-29 Общество с ограниченной ответственностью "РЭЙДИКС" Способ перераспределения данных при расширении массива дисков
US11768763B2 (en) 2020-07-08 2023-09-26 Pure Storage, Inc. Flash secure erase
US11681448B2 (en) 2020-09-08 2023-06-20 Pure Storage, Inc. Multiple device IDs in a multi-fabric module storage system
US11513974B2 (en) 2020-09-08 2022-11-29 Pure Storage, Inc. Using nonce to control erasure of data blocks of a multi-controller storage system
CN114385069A (zh) * 2020-10-22 2022-04-22 伊姆西Ip控股有限责任公司 存储管理的方法、设备和计算机程序产品
US11487455B2 (en) 2020-12-17 2022-11-01 Pure Storage, Inc. Dynamic block allocation to optimize storage system performance
US11614880B2 (en) 2020-12-31 2023-03-28 Pure Storage, Inc. Storage system with selectable write paths
US11847324B2 (en) 2020-12-31 2023-12-19 Pure Storage, Inc. Optimizing resiliency groups for data regions of a storage system
US20220236923A1 (en) * 2021-01-22 2022-07-28 EMC IP Holding Company LLC Metro cluster for virtual volumes
JP7374944B2 (ja) * 2021-03-05 2023-11-07 株式会社日立製作所 ストレージシステム及びストレージ管理方法
US11630593B2 (en) 2021-03-12 2023-04-18 Pure Storage, Inc. Inline flash memory qualification in a storage system
US11507597B2 (en) 2021-03-31 2022-11-22 Pure Storage, Inc. Data replication to meet a recovery point objective
US11832410B2 (en) 2021-09-14 2023-11-28 Pure Storage, Inc. Mechanical energy absorbing bracket apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08115173A (ja) * 1994-10-05 1996-05-07 Hewlett Packard Co <Hp> データ記憶装置の記憶容量を拡大する方法
JP2000231454A (ja) * 1999-02-09 2000-08-22 Nec Corp オペレーティングシステム
US20020103969A1 (en) * 2000-12-12 2002-08-01 Hiroshi Koizumi System and method for storing data
JP2005502121A (ja) * 2001-08-31 2005-01-20 アルキヴィオ・インコーポレーテッド 記憶ポリシに基づいてデータを記憶する技法
US20050182992A1 (en) * 2004-02-13 2005-08-18 Kris Land Method and apparatus for raid conversion
US6978259B1 (en) * 2001-10-23 2005-12-20 Hewlett-Packard Development Company, L.P. Automated system adaptation technique particularly for data storage systems
JP2006079432A (ja) * 2004-09-10 2006-03-23 Hitachi Ltd ストレージ装置およびそのボリューム再配置方法
CN101454745B (zh) * 2006-05-24 2012-09-05 克姆佩棱特科技公司 用于raid管理、重新分配以及重新分段的系统和方法

Family Cites Families (220)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36462E (en) 1986-01-16 1999-12-21 International Business Machines Corporation Method to control paging subsystem processing in virtual memory data processing system during execution of critical code sections
JPH03259320A (ja) 1990-03-08 1991-11-19 Nec Corp ストライピング領域割り当て方式
US5396635A (en) * 1990-06-01 1995-03-07 Vadem Corporation Power conservation apparatus having multiple power reduction levels dependent upon the activity of the computer system
US5274807A (en) 1990-11-01 1993-12-28 At&T Bell Laboratories Method for reducing magnetic storage volume for computer disk image backup
US5155835A (en) 1990-11-19 1992-10-13 Storage Technology Corporation Multilevel, hierarchical, dynamically mapped data storage subsystem
US5278838A (en) 1991-06-18 1994-01-11 Ibm Corp. Recovery from errors in a redundant array of disk drives
US5502836A (en) * 1991-11-21 1996-03-26 Ast Research, Inc. Method for disk restriping during system operation
US5371882A (en) 1992-01-14 1994-12-06 Storage Technology Corporation Spare disk drive replacement scheduling system for a disk drive array data storage subsystem
JP3259320B2 (ja) 1992-04-09 2002-02-25 松下電器産業株式会社 テレビジョン受信機
US5331646A (en) 1992-05-08 1994-07-19 Compaq Computer Corporation Error correcting code technique for improving reliablility of a disk array
US6269453B1 (en) 1993-06-29 2001-07-31 Compaq Computer Corporation Method for reorganizing the data on a RAID-4 or RAID-5 array in the absence of one disk
US5390327A (en) * 1993-06-29 1995-02-14 Digital Equipment Corporation Method for on-line reorganization of the data on a RAID-4 or RAID-5 array in the absence of one disk and the on-line restoration of a replacement disk
JPH0744326A (ja) * 1993-07-30 1995-02-14 Hitachi Ltd 記憶装置システム
JP2735479B2 (ja) 1993-12-29 1998-04-02 株式会社東芝 メモリ・スナップショット方法及びメモリ・スナップショット機能を持つ情報処理装置
DE69533764T2 (de) 1994-06-22 2005-12-01 Hewlett-Packard Development Co., L.P., Houston Verfahren zum Gebrauch von Speicherplatten unterschiedlicher Inhalte in einem Einzelvolumen einer hierarchischen Speicherplattenanordnung
US5572661A (en) 1994-10-05 1996-11-05 Hewlett-Packard Company Methods and system for detecting data loss in a hierarchic data storage system
US5835953A (en) * 1994-10-13 1998-11-10 Vinca Corporation Backup system that takes a snapshot of the locations in a mass storage device that has been identified for updating prior to updating
US5664187A (en) 1994-10-26 1997-09-02 Hewlett-Packard Company Method and system for selecting data for migration in a hierarchic data storage system using frequency distribution tables
US5659704A (en) 1994-12-02 1997-08-19 Hewlett-Packard Company Methods and system for reserving storage space for data migration in a redundant hierarchic data storage system by dynamically computing maximum storage space for mirror redundancy
JPH0944381A (ja) 1995-07-31 1997-02-14 Toshiba Corp データ格納方法およびデータ格納装置
US5875456A (en) * 1995-08-17 1999-02-23 Nstor Corporation Storage device array and methods for striping and unstriping data and for adding and removing disks online to/from a raid storage array
US5809224A (en) * 1995-10-13 1998-09-15 Compaq Computer Corporation On-line disk array reconfiguration
JP3628777B2 (ja) 1995-10-30 2005-03-16 株式会社日立製作所 外部記憶装置
US5719983A (en) 1995-12-18 1998-02-17 Symbios Logic Inc. Method and apparatus for placement of video data based on disk zones
KR100208801B1 (ko) * 1996-09-16 1999-07-15 윤종용 데이타 입/출력 성능을 향상시키기 위한 기억장치 시스템 및 그에 따른 데이타 복구정보 캐시구현방법
KR100275900B1 (ko) * 1996-09-21 2000-12-15 윤종용 알에이아이디 서브시스템에 있어서 분할패러티 예비 디스크 구현방법
US5950218A (en) 1996-11-04 1999-09-07 Storage Technology Corporation Method and system for storage and retrieval of data on a tape medium
US6073218A (en) * 1996-12-23 2000-06-06 Lsi Logic Corp. Methods and apparatus for coordinating shared multiple raid controller access to common storage devices
JPH10198528A (ja) * 1997-01-08 1998-07-31 Hitachi Ltd アレイ記憶装置およびその制御方法
US5897661A (en) * 1997-02-25 1999-04-27 International Business Machines Corporation Logical volume manager and method having enhanced update capability with dynamic allocation of storage and minimal storage of metadata information
US5974515A (en) 1997-04-08 1999-10-26 Emc Corporation System for distributing volumes to an HSM system front end
US6275897B1 (en) 1997-06-17 2001-08-14 Emc Corporation Remote cache utilization for mirrored mass storage subsystem
US6076143A (en) * 1997-09-02 2000-06-13 Emc Corporation Method and apparatus for managing the physical storage locations for blocks of information in a storage system to increase system performance
US5933834A (en) 1997-10-16 1999-08-03 International Business Machines Incorporated System and method for re-striping a set of objects onto an exploded array of storage units in a computer system
US6215747B1 (en) * 1997-11-17 2001-04-10 Micron Electronics, Inc. Method and system for increasing the performance of constant angular velocity CD-ROM drives
US6192444B1 (en) * 1998-01-05 2001-02-20 International Business Machines Corporation Method and system for providing additional addressable functional space on a disk for use with a virtual data storage subsystem
US6073221A (en) * 1998-01-05 2000-06-06 International Business Machines Corporation Synchronization of shared data stores through use of non-empty track copy procedure
US6212531B1 (en) * 1998-01-13 2001-04-03 International Business Machines Corporation Method for implementing point-in-time copy using a snapshot function
US6078932A (en) * 1998-01-13 2000-06-20 International Business Machines Corporation Point-in-time backup utilizing multiple copy technologies
JPH11203056A (ja) * 1998-01-19 1999-07-30 Fujitsu Ltd 入出力制御装置及びアレイディスク装置
US6115788A (en) 1998-02-20 2000-09-05 Seagate Technology, Inc. Multi-drive array with improved data transfer rate performance
US6347359B1 (en) * 1998-02-27 2002-02-12 Aiwa Raid Technology, Inc. Method for reconfiguration of RAID data storage systems
US6421711B1 (en) * 1998-06-29 2002-07-16 Emc Corporation Virtual ports for data transferring of a data storage system
US7392234B2 (en) 1999-05-18 2008-06-24 Kom, Inc. Method and system for electronic file lifecycle management
US6438642B1 (en) * 1999-05-18 2002-08-20 Kom Networks Inc. File-based virtual storage file system, method and computer program product for automated file management on multiple file system storage devices
US6353878B1 (en) * 1998-08-13 2002-03-05 Emc Corporation Remote control of backup media in a secondary storage subsystem through access to a primary storage subsystem
US6366987B1 (en) * 1998-08-13 2002-04-02 Emc Corporation Computer data storage physical backup and logical restore
US6269431B1 (en) 1998-08-13 2001-07-31 Emc Corporation Virtual storage and block level direct access of secondary storage for recovery of backup data
WO2000013077A2 (de) 1998-09-01 2000-03-09 Siemens Aktiengesellschaft Verfahren zum speichern von daten auf einem speichermedium mit begrenzter speicherkapazität
US6282671B1 (en) 1998-11-10 2001-08-28 International Business Machines Corporation Method and system for improved efficiency of parity calculation in RAID system
US6311251B1 (en) 1998-11-23 2001-10-30 Storage Technology Corporation System for optimizing data storage in a RAID system
US6611897B2 (en) 1999-03-22 2003-08-26 Hitachi, Ltd. Method and apparatus for implementing redundancy on data stored in a disk array subsystem based on use frequency or importance of the data
US6415296B1 (en) 1999-03-31 2002-07-02 International Business Machines Corporation Method and system for more efficiently providing a copy in a raid data storage system
US6721794B2 (en) 1999-04-01 2004-04-13 Diva Systems Corp. Method of data management for efficiently storing and retrieving data to respond to user access requests
US7000069B2 (en) * 1999-04-05 2006-02-14 Hewlett-Packard Development Company, L.P. Apparatus and method for providing very large virtual storage volumes using redundant arrays of disks
US6275898B1 (en) * 1999-05-13 2001-08-14 Lsi Logic Corporation Methods and structure for RAID level migration within a logical unit
US6356969B1 (en) * 1999-08-13 2002-03-12 Lsi Logic Corporation Methods and apparatus for using interrupt score boarding with intelligent peripheral device
US6516425B1 (en) * 1999-10-29 2003-02-04 Hewlett-Packard Co. Raid rebuild using most vulnerable data redundancy scheme first
US6904599B1 (en) 1999-11-29 2005-06-07 Microsoft Corporation Storage management system having abstracted volume providers
US6560615B1 (en) * 1999-12-17 2003-05-06 Novell, Inc. Method and apparatus for implementing a highly efficient, robust modified files list (MFL) for a storage system volume
US6584582B1 (en) 2000-01-14 2003-06-24 Sun Microsystems, Inc. Method of file system recovery logging
US6839827B1 (en) * 2000-01-18 2005-01-04 International Business Machines Corporation Method, system, program, and data structures for mapping logical blocks to physical blocks
US6826711B2 (en) 2000-02-18 2004-11-30 Avamar Technologies, Inc. System and method for data protection with multidimensional parity
US6571310B1 (en) 2000-04-20 2003-05-27 International Business Machines Corporation Method and apparatus for managing a heterogeneous data storage system
CN1198447C (zh) * 2000-05-12 2005-04-20 提维股份有限公司 提高带宽效率的方法
JP2001337850A (ja) 2000-05-25 2001-12-07 Hitachi Ltd 記憶装置および記憶装置の制御方法
JP3985430B2 (ja) 2000-06-02 2007-10-03 富士ゼロックス株式会社 データベース管理装置及び方法
US6779095B2 (en) * 2000-06-19 2004-08-17 Storage Technology Corporation Apparatus and method for instant copy of data using pointers to new and original data in a data location
US6665815B1 (en) 2000-06-22 2003-12-16 Hewlett-Packard Development Company, L.P. Physical incremental backup using snapshots
US8281022B1 (en) * 2000-06-30 2012-10-02 Emc Corporation Method and apparatus for implementing high-performance, scaleable data processing and storage systems
US7093161B1 (en) 2002-08-16 2006-08-15 Onspec Electronic, Inc. Software recovery method for flash media with defective formatting
US6839864B2 (en) * 2000-07-06 2005-01-04 Onspec Electronic Inc. Field-operable, stand-alone apparatus for media recovery and regeneration
US6438638B1 (en) * 2000-07-06 2002-08-20 Onspec Electronic, Inc. Flashtoaster for reading several types of flash-memory cards with or without a PC
US6766430B2 (en) * 2000-07-06 2004-07-20 Hitachi, Ltd. Data reallocation among storage systems
US7072916B1 (en) 2000-08-18 2006-07-04 Network Appliance, Inc. Instant snapshot
US6732125B1 (en) * 2000-09-08 2004-05-04 Storage Technology Corporation Self archiving log structured volume with intrinsic data protection
US7822967B2 (en) * 2000-09-27 2010-10-26 Huron Ip Llc Apparatus, architecture, and method for integrated modular server system providing dynamically power-managed and work-load managed network devices
US7228441B2 (en) * 2000-09-27 2007-06-05 Huron Ip Llc Multi-server and multi-CPU power management system and method
US20070245165A1 (en) * 2000-09-27 2007-10-18 Amphus, Inc. System and method for activity or event based dynamic energy conserving server reconfiguration
US7058826B2 (en) * 2000-09-27 2006-06-06 Amphus, Inc. System, architecture, and method for logical server and other network devices in a dynamically configurable multi-server network environment
US7032119B2 (en) * 2000-09-27 2006-04-18 Amphus, Inc. Dynamic power and workload management for multi-server system
US6618794B1 (en) 2000-10-31 2003-09-09 Hewlett-Packard Development Company, L.P. System for generating a point-in-time copy of data in a data storage system
US6839802B2 (en) 2000-12-08 2005-01-04 International Business Machines Corporation Method, system, and program for writing files to zone formatted storage media to improve data transfer rates
US6745305B2 (en) * 2000-12-13 2004-06-01 Ncr Corporation Zeroed block optimization in disk mirroring applications
US6799258B1 (en) 2001-01-10 2004-09-28 Datacore Software Corporation Methods and apparatus for point-in-time volumes
WO2002065275A1 (en) * 2001-01-11 2002-08-22 Yottayotta, Inc. Storage virtualization system and methods
US6990547B2 (en) * 2001-01-29 2006-01-24 Adaptec, Inc. Replacing file system processors by hot swapping
US6990667B2 (en) * 2001-01-29 2006-01-24 Adaptec, Inc. Server-independent object positioning for load balancing drives and servers
US7058788B2 (en) 2001-02-23 2006-06-06 Falconstor Software, Inc. Dynamic allocation of computer memory
US6795895B2 (en) * 2001-03-07 2004-09-21 Canopy Group Dual axis RAID systems for enhanced bandwidth and reliability
US6510500B2 (en) 2001-03-09 2003-01-21 International Business Machines Corporation System and method for minimizing message transactions for fault-tolerant snapshots in a dual-controller environment
JP4078039B2 (ja) 2001-03-21 2008-04-23 株式会社東芝 スナップショットイメージの世代管理方法及び世代管理装置
US6915241B2 (en) 2001-04-20 2005-07-05 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method for segmentation and identification of nonstationary time series
US6674598B2 (en) 2001-05-14 2004-01-06 Hitachi Global Technologies Radial positioning of data to improve hard disk drive reliability
US20060248360A1 (en) * 2001-05-18 2006-11-02 Fung Henry T Multi-server and multi-CPU power management system and method
US6915454B1 (en) 2001-06-12 2005-07-05 Microsoft Corporation Web controls validation
US6948038B2 (en) * 2001-07-24 2005-09-20 Microsoft Corporation System and method for backing up and restoring data
US20030020282A1 (en) * 2001-07-25 2003-01-30 Biddings Emma L. Particulate guide
US6695777B2 (en) * 2001-07-26 2004-02-24 Koninklijke Philips Electronics N.V. Method and apparatus for enabling the battery pack size of an ultrasound device to be independent of the physical design of the ultrasound device
KR100392382B1 (ko) * 2001-07-27 2003-07-23 한국전자통신연구원 동적 크기 변경 및 메타 데이터 양의 최소화를 위한 논리볼륨 관리 방법
US7146524B2 (en) 2001-08-03 2006-12-05 Isilon Systems, Inc. Systems and methods for providing a distributed file system incorporating a virtual hot spare
US6952701B2 (en) * 2001-08-07 2005-10-04 Hewlett-Packard Development Company, L.P. Simultaneous array configuration and store assignment for a data storage system
JP2003050724A (ja) 2001-08-07 2003-02-21 Hitachi Ltd ストレージの運用方法およびこれに用いるストレージ
US7092977B2 (en) * 2001-08-31 2006-08-15 Arkivio, Inc. Techniques for storing data based upon storage policies
US6636778B2 (en) 2001-09-10 2003-10-21 International Business Machines Corporation Allocation of data storage drives of an automated data storage library
US6823436B2 (en) * 2001-10-02 2004-11-23 International Business Machines Corporation System for conserving metadata about data snapshots
US7069468B1 (en) 2001-11-15 2006-06-27 Xiotech Corporation System and method for re-allocating storage area network resources
US6996741B1 (en) * 2001-11-15 2006-02-07 Xiotech Corporation System and method for redundant communication between redundant controllers
US7127633B1 (en) 2001-11-15 2006-10-24 Xiotech Corporation System and method to failover storage area network targets from one interface to another
US6883065B1 (en) * 2001-11-15 2005-04-19 Xiotech Corporation System and method for a redundant communication channel via storage area network back-end
US7003688B1 (en) * 2001-11-15 2006-02-21 Xiotech Corporation System and method for a reserved memory area shared by all redundant storage controllers
US7043663B1 (en) * 2001-11-15 2006-05-09 Xiotech Corporation System and method to monitor and isolate faults in a storage area network
US6877109B2 (en) * 2001-11-19 2005-04-05 Lsi Logic Corporation Method for the acceleration and simplification of file system logging techniques using storage device snapshots
US7644136B2 (en) * 2001-11-28 2010-01-05 Interactive Content Engines, Llc. Virtual file system
US7296125B2 (en) 2001-11-29 2007-11-13 Emc Corporation Preserving a snapshot of selected data of a mass storage system
US7173929B1 (en) * 2001-12-10 2007-02-06 Incipient, Inc. Fast path for performing data operations
IL147073A0 (en) * 2001-12-10 2002-08-14 Monosphere Ltd Method for managing the storage resources attached to a data network
US7047358B2 (en) * 2001-12-26 2006-05-16 Boon Storage Technologies, Inc. High-performance log-structured RAID
US7237075B2 (en) 2002-01-22 2007-06-26 Columbia Data Products, Inc. Persistent snapshot methods
US6829617B2 (en) 2002-02-15 2004-12-07 International Business Machines Corporation Providing a snapshot of a subset of a file system
US7093158B2 (en) 2002-03-11 2006-08-15 Hewlett-Packard Development Company, L.P. Data redundancy in a hot pluggable, large symmetric multi-processor system
US7251713B1 (en) 2002-03-18 2007-07-31 Xiotech Corporation System and method to transport data snapshots
US7254813B2 (en) 2002-03-21 2007-08-07 Network Appliance, Inc. Method and apparatus for resource allocation in a raid system
US6985995B2 (en) 2002-03-29 2006-01-10 Panasas, Inc. Data file migration from a mirrored RAID to a non-mirrored XOR-based RAID without rewriting the data
JP2003316671A (ja) * 2002-04-19 2003-11-07 Hitachi Ltd ストレージネットワークの構成表示方法
US7085956B2 (en) 2002-04-29 2006-08-01 International Business Machines Corporation System and method for concurrent logical device swapping
US6912635B2 (en) 2002-05-08 2005-06-28 Hewlett-Packard Development Company, L.P. Distributing workload evenly across storage media in a storage array
US7100080B2 (en) 2002-05-08 2006-08-29 Xiotech Corporation Write cache recovery after loss of power
US20030212865A1 (en) 2002-05-08 2003-11-13 Hicken Michael S. Method and apparatus for flushing write cache data
US7197614B2 (en) * 2002-05-08 2007-03-27 Xiotech Corporation Method and apparatus for mirroring data stored in a mass storage system
US7293196B2 (en) 2002-05-08 2007-11-06 Xiotech Corporation Method, apparatus, and system for preserving cache data of redundant storage controllers
US7162587B2 (en) * 2002-05-08 2007-01-09 Hiken Michael S Method and apparatus for recovering redundant cache data of a failed controller and reestablishing redundancy
US7181581B2 (en) * 2002-05-09 2007-02-20 Xiotech Corporation Method and apparatus for mirroring data stored in a mass storage system
US7380113B2 (en) * 2002-05-17 2008-05-27 Xiotech Corporation Method for updating memory resident firmware as a background operation
US7216258B2 (en) * 2002-05-17 2007-05-08 Xiotech Corporation Method and apparatus for recovering from a non-fatal fault during background operations
US6898667B2 (en) * 2002-05-23 2005-05-24 Hewlett-Packard Development Company, L.P. Managing data in a multi-level raid storage array
US6732171B2 (en) * 2002-05-31 2004-05-04 Lefthand Networks, Inc. Distributed network storage system with virtualization
US6751136B2 (en) 2002-06-17 2004-06-15 Lsi Logic Corporation Drive failure recovery via capacity reconfiguration
US7024586B2 (en) * 2002-06-24 2006-04-04 Network Appliance, Inc. Using file system information in raid data reconstruction and migration
US6898668B2 (en) 2002-06-24 2005-05-24 Hewlett-Packard Development Company, L.P. System and method for reorganizing data in a raid storage system
US6938123B2 (en) * 2002-07-19 2005-08-30 Storage Technology Corporation System and method for raid striping
US6907505B2 (en) 2002-07-31 2005-06-14 Hewlett-Packard Development Company, L.P. Immediately available, statically allocated, full-logical-unit copy with a transient, snapshot-copy-like intermediate stage
US6957362B2 (en) * 2002-08-06 2005-10-18 Emc Corporation Instantaneous restoration of a production copy from a snapshot copy in a data storage system
US7032093B1 (en) * 2002-08-08 2006-04-18 3Pardata, Inc. On-demand allocation of physical storage for virtual volumes using a zero logical disk
US7107385B2 (en) * 2002-08-09 2006-09-12 Network Appliance, Inc. Storage virtualization by layering virtual disk objects on a file system
US7107417B2 (en) 2002-08-29 2006-09-12 International Business Machines Corporation System, method and apparatus for logical volume duplexing in a virtual tape system
US7191304B1 (en) * 2002-09-06 2007-03-13 3Pardata, Inc. Efficient and reliable virtual volume mapping
US7672226B2 (en) * 2002-09-09 2010-03-02 Xiotech Corporation Method, apparatus and program storage device for verifying existence of a redundant fibre channel path
US7076606B2 (en) 2002-09-20 2006-07-11 Quantum Corporation Accelerated RAID with rewind capability
US7089395B2 (en) 2002-10-03 2006-08-08 Hewlett-Packard Development Company, L.P. Computer systems, virtual storage systems and virtual storage system operational methods
US6996582B2 (en) * 2002-10-03 2006-02-07 Hewlett-Packard Development Company, L.P. Virtual storage systems and virtual storage system operational methods
US6857057B2 (en) * 2002-10-03 2005-02-15 Hewlett-Packard Development Company, L.P. Virtual storage systems and virtual storage system operational methods
US6952794B2 (en) * 2002-10-10 2005-10-04 Ching-Hung Lu Method, system and apparatus for scanning newly added disk drives and automatically updating RAID configuration and rebuilding RAID data
US6981114B1 (en) 2002-10-16 2005-12-27 Veritas Operating Corporation Snapshot reconstruction from an existing snapshot and one or more modification logs
KR100439675B1 (ko) 2002-10-24 2004-07-14 한국전자통신연구원 대용량 공유 저장장치를 위한 효율적인 스냅샷 수행방법
US7024526B2 (en) * 2002-10-31 2006-04-04 Hitachi, Ltd. Apparatus and method of null data skip remote copy
US7194653B1 (en) * 2002-11-04 2007-03-20 Cisco Technology, Inc. Network router failover mechanism
US6957294B1 (en) 2002-11-15 2005-10-18 Unisys Corporation Disk volume virtualization block-level caching
US7134053B1 (en) * 2002-11-22 2006-11-07 Apple Computer, Inc. Method and apparatus for dynamic performance evaluation of data storage systems
US7284016B2 (en) * 2002-12-03 2007-10-16 Emc Corporation Client-server protocol for directory access of snapshot file systems in a storage system
US6961815B2 (en) 2002-12-05 2005-11-01 International Business Machines Corporation Multiple disk data storage system for reducing power consumption
JP2004213064A (ja) * 2002-12-26 2004-07-29 Fujitsu Ltd Raid装置及びその論理デバイス拡張方法
US7263582B2 (en) 2003-01-07 2007-08-28 Dell Products L.P. System and method for raid configuration
JP4283004B2 (ja) * 2003-02-04 2009-06-24 株式会社日立製作所 ディスク制御装置およびディスク制御装置の制御方法
US7320052B2 (en) * 2003-02-10 2008-01-15 Intel Corporation Methods and apparatus for providing seamless file system encryption and redundant array of independent disks from a pre-boot environment into a firmware interface aware operating system
JP4651913B2 (ja) 2003-02-17 2011-03-16 株式会社日立製作所 記憶装置システム
US7231544B2 (en) 2003-02-27 2007-06-12 Hewlett-Packard Development Company, L.P. Restoring data from point-in-time representations of the data
US7184933B2 (en) * 2003-02-28 2007-02-27 Hewlett-Packard Development Company, L.P. Performance estimation tool for data storage systems
US7111147B1 (en) 2003-03-21 2006-09-19 Network Appliance, Inc. Location-independent RAID group virtual block management
JP4322031B2 (ja) 2003-03-27 2009-08-26 株式会社日立製作所 記憶装置
US7124272B1 (en) 2003-04-18 2006-10-17 Symantec Corporation File usage history log for improved placement of files in differential rate memory according to frequency of utilizations and volatility of allocation space
JP2004348193A (ja) * 2003-05-20 2004-12-09 Hitachi Ltd 情報処理システムおよびそのバックアップ方法
US6959313B2 (en) 2003-07-08 2005-10-25 Pillar Data Systems, Inc. Snapshots of file systems in data storage systems
US20050010731A1 (en) * 2003-07-08 2005-01-13 Zalewski Stephen H. Method and apparatus for protecting data against any category of disruptions
US7379954B2 (en) 2003-07-08 2008-05-27 Pillar Data Systems, Inc. Management of file system snapshots
JP4321705B2 (ja) * 2003-07-29 2009-08-26 株式会社日立製作所 スナップショットの取得を制御するための装置及び記憶システム
US20050027938A1 (en) * 2003-07-29 2005-02-03 Xiotech Corporation Method, apparatus and program storage device for dynamically resizing mirrored virtual disks in a RAID storage system
WO2005017737A2 (en) 2003-08-14 2005-02-24 Compellent Technologies Virtual disk drive system and method
US7577806B2 (en) 2003-09-23 2009-08-18 Symantec Operating Corporation Systems and methods for time dependent data storage and recovery
US7991748B2 (en) * 2003-09-23 2011-08-02 Symantec Corporation Virtual data store creation and use
US20050081086A1 (en) * 2003-10-10 2005-04-14 Xiotech Corporation Method, apparatus and program storage device for optimizing storage device distribution within a RAID to provide fault tolerance for the RAID
CN1258713C (zh) * 2003-11-14 2006-06-07 清华大学 基于磁盘特征的数据分布动态映射的方法
JP4451118B2 (ja) * 2003-11-18 2010-04-14 株式会社日立製作所 情報処理システム、管理装置、論理デバイス選択方法及びプログラム
US7133884B1 (en) 2003-11-26 2006-11-07 Bmc Software, Inc. Unobtrusive point-in-time consistent copies
TWI225596B (en) 2003-12-15 2004-12-21 Promise Technology Inc RAID and conversion thereof
US7103740B1 (en) 2003-12-31 2006-09-05 Veritas Operating Corporation Backup mechanism for a multi-class file system
JP2005228278A (ja) * 2004-01-14 2005-08-25 Hitachi Ltd 記憶領域の管理方法、管理装置及び管理プログラム
JP4634049B2 (ja) 2004-02-04 2011-02-16 株式会社日立製作所 ディスクアレイ装置における異常通知制御
JP4521206B2 (ja) 2004-03-01 2010-08-11 株式会社日立製作所 ネットワークストレージシステム、コマンドコントローラ、及びネットワークストレージシステムにおけるコマンド制御方法
JP2005293363A (ja) * 2004-04-01 2005-10-20 Toshiba Corp ディスクアレイコントローラおよび情報処理装置
JP2005332123A (ja) * 2004-05-19 2005-12-02 Fujitsu Ltd ディスクアレイ装置およびディスクアレイ装置におけるグループ分割方法
US7409518B2 (en) 2004-05-21 2008-08-05 International Business Machines Corporation Method for improving disk space allocation
US7702948B1 (en) * 2004-07-13 2010-04-20 Adaptec, Inc. Auto-configuration of RAID systems
US20060059306A1 (en) * 2004-09-14 2006-03-16 Charlie Tseng Apparatus, system, and method for integrity-assured online raid set expansion
US7263583B2 (en) * 2004-10-05 2007-08-28 International Business Machines Corporation On demand, non-capacity based process, apparatus and computer program to determine maintenance fees for disk data storage system
US7603532B2 (en) 2004-10-15 2009-10-13 Netapp, Inc. System and method for reclaiming unused space from a thinly provisioned data container
US7565569B2 (en) * 2004-10-22 2009-07-21 International Business Machines Corporation Data protection in a mass storage system
US20060093282A1 (en) * 2004-10-29 2006-05-04 Christian Shepherd Method and apparatus for providing connector keying and identification for unidirectional fiber cables
JP2006134026A (ja) * 2004-11-05 2006-05-25 Matsushita Electric Ind Co Ltd ディスクアレイ装置およびraidレベル設定方法
US7490207B2 (en) 2004-11-08 2009-02-10 Commvault Systems, Inc. System and method for performing auxillary storage operations
US20060161752A1 (en) * 2005-01-18 2006-07-20 Burkey Todd R Method, apparatus and program storage device for providing adaptive, attribute driven, closed-loop storage management configuration and control
US20060161808A1 (en) 2005-01-18 2006-07-20 Burkey Todd R Method, apparatus and program storage device for providing intelligent copying for faster virtual disk mirroring
US7941602B2 (en) 2005-02-10 2011-05-10 Xiotech Corporation Method, apparatus and program storage device for providing geographically isolated failover using instant RAID swapping in mirrored virtual disks
US7574464B2 (en) 2005-02-14 2009-08-11 Netapp, Inc. System and method for enabling a storage system to support multiple volume formats simultaneously
JP4671720B2 (ja) 2005-03-11 2011-04-20 株式会社日立製作所 ストレージシステム及びデータ移動方法
US7305579B2 (en) 2005-03-22 2007-12-04 Xiotech Corporation Method, apparatus and program storage device for providing intelligent rebuild order selection
US20060218360A1 (en) 2005-03-22 2006-09-28 Burkey Todd R Method, apparatus and program storage device for providing an optimized read methodology for synchronously mirrored virtual disk pairs
US7281106B1 (en) * 2005-03-23 2007-10-09 Emc Corporation Method and apparatus for selective volume swapping in a data storage device based on merging multiple sets of candidate storage devices
JP4920898B2 (ja) 2005-03-24 2012-04-18 株式会社日立製作所 計算機システム、データ管理方法およびプログラム
US7904649B2 (en) 2005-04-29 2011-03-08 Netapp, Inc. System and method for restriping data across a plurality of volumes
US20060253669A1 (en) 2005-05-09 2006-11-09 Scott Lobdell Method and apparatus for providing a transportable storage area network
US7913038B2 (en) * 2005-06-03 2011-03-22 Seagate Technology Llc Distributed storage system with accelerated striping
US7437507B2 (en) 2005-06-06 2008-10-14 Cisco Technology, Inc. Online restriping technique for distributed network based virtualization
JP4345979B2 (ja) * 2005-06-30 2009-10-14 富士通株式会社 Raid装置、通信接続監視方法及びプログラム
JP4699837B2 (ja) * 2005-08-25 2011-06-15 株式会社日立製作所 ストレージシステム、管理計算機及びデータ移動方法
JP2007233903A (ja) 2006-03-03 2007-09-13 Hitachi Ltd 記憶制御装置及び記憶制御装置のデータ回復方法
US7653832B2 (en) * 2006-05-08 2010-01-26 Emc Corporation Storage array virtualization using a storage block mapping protocol client and server
US7676514B2 (en) 2006-05-08 2010-03-09 Emc Corporation Distributed maintenance of snapshot copies by a primary processor managing metadata and a secondary processor providing read-write access to a production dataset
US7702662B2 (en) 2007-05-16 2010-04-20 International Business Machines Corporation Method and system for handling reallocated blocks in a file system
US8112585B2 (en) * 2009-04-30 2012-02-07 Netapp, Inc. Method and apparatus for dynamically switching cache policies

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08115173A (ja) * 1994-10-05 1996-05-07 Hewlett Packard Co <Hp> データ記憶装置の記憶容量を拡大する方法
JP2000231454A (ja) * 1999-02-09 2000-08-22 Nec Corp オペレーティングシステム
US20020103969A1 (en) * 2000-12-12 2002-08-01 Hiroshi Koizumi System and method for storing data
JP2005502121A (ja) * 2001-08-31 2005-01-20 アルキヴィオ・インコーポレーテッド 記憶ポリシに基づいてデータを記憶する技法
US6978259B1 (en) * 2001-10-23 2005-12-20 Hewlett-Packard Development Company, L.P. Automated system adaptation technique particularly for data storage systems
US20050182992A1 (en) * 2004-02-13 2005-08-18 Kris Land Method and apparatus for raid conversion
JP2006079432A (ja) * 2004-09-10 2006-03-23 Hitachi Ltd ストレージ装置およびそのボリューム再配置方法
CN101454745B (zh) * 2006-05-24 2012-09-05 克姆佩棱特科技公司 用于raid管理、重新分配以及重新分段的系统和方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111858188A (zh) * 2019-04-29 2020-10-30 伊姆西Ip控股有限责任公司 存储管理的方法、设备和计算机程序产品

Also Published As

Publication number Publication date
US20110167219A1 (en) 2011-07-07
WO2007140260A3 (en) 2008-03-27
JP2009538482A (ja) 2009-11-05
JP5048760B2 (ja) 2012-10-17
US9244625B2 (en) 2016-01-26
US20120290788A1 (en) 2012-11-15
JP5427927B2 (ja) 2014-02-26
US20160103624A1 (en) 2016-04-14
CN102880424B (zh) 2015-10-28
WO2007140260A2 (en) 2007-12-06
CN101454745B (zh) 2012-09-05
CN101454745A (zh) 2009-06-10
EP2021904A2 (en) 2009-02-11
US7886111B2 (en) 2011-02-08
US10296237B2 (en) 2019-05-21
US8230193B2 (en) 2012-07-24
JP2012226770A (ja) 2012-11-15
US20080109601A1 (en) 2008-05-08
EP2357552A1 (en) 2011-08-17

Similar Documents

Publication Publication Date Title
CN101454745B (zh) 用于raid管理、重新分配以及重新分段的系统和方法
US11941255B2 (en) Storage system and data management method
CN102449607B (zh) 具有多个闪存封装的存储系统
CN102576330B (zh) 具有持久化无用单元收集机制的存储系统
CN103688248B (zh) 一种存储阵列的管理方法、装置和控制器
US7650480B2 (en) Storage system and write distribution method
US9274723B2 (en) Storage apparatus and its control method
US10387038B1 (en) Storage space allocation for logical disk creation
WO2012117453A1 (ja) 計算機システム、および、計算機システムにおける仮想計算機の最適配置方法
JPH09319528A (ja) データ記憶システムにおけるデータの再配置方法、そのシステムに記憶されたデータのアクセス方法及びデータ記憶システム
CN103384877A (zh) 包括闪存的存储系统和存储控制方法
JPH08115173A (ja) データ記憶装置の記憶容量を拡大する方法
CN103052938A (zh) 数据迁移系统和数据迁移方法
CN104969170A (zh) 层次化存储系统、存储控制器以及代替层次间的数据移动的方法
WO2014098872A1 (en) Raid storage processing
CN103761053A (zh) 一种数据处理方法和装置
CN101976181A (zh) 一种存储资源的管理方法及管理装置
US7676644B2 (en) Data processing system, storage apparatus and management console
JP5730446B1 (ja) トライアル領域を備えた階層化ストレージシステム、ストレージコントローラ及びプログラム
CN101997919A (zh) 一种存储资源的管理方法及管理装置
CN109426432A (zh) 独立磁盘冗余阵列的创建方法、装置及设备
CN111124260B (zh) 管理独立盘冗余阵列的方法、电子设备和计算机程序产品
US11544005B2 (en) Storage system and processing method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160506

Address after: American Texas

Patentee after: DELL International Ltd

Address before: American Minnesota

Patentee before: Compellent Technologies