CA2323106A1 - File server storage arrangement - Google Patents

File server storage arrangement Download PDF

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Publication number
CA2323106A1
CA2323106A1 CA002323106A CA2323106A CA2323106A1 CA 2323106 A1 CA2323106 A1 CA 2323106A1 CA 002323106 A CA002323106 A CA 002323106A CA 2323106 A CA2323106 A CA 2323106A CA 2323106 A1 CA2323106 A1 CA 2323106A1
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CA
Canada
Prior art keywords
file server
file
server request
storage system
storage arrangement
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
CA002323106A
Other languages
French (fr)
Other versions
CA2323106C (en
Inventor
Steven Kleiman
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.)
NetApp Inc
Original Assignee
Network Appliance, Inc.
Steven Kleiman
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 Network Appliance, Inc., Steven Kleiman filed Critical Network Appliance, Inc.
Publication of CA2323106A1 publication Critical patent/CA2323106A1/en
Application granted granted Critical
Publication of CA2323106C publication Critical patent/CA2323106C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2035—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant without idle spare hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2097—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements maintaining the standby controller/processing unit updated
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2046—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant where the redundant components share persistent storage

Abstract

The invention provides a storage system that is highly available even in the face of component failures in the storage system, and a method for operating that storage system. A first and a second file server each includes a file server request log for storing incoming file server requests. Both the first and second file servers have access to a common set of mass storage elements. Each incoming file server request is copied to both the first and second file servers; the frost file server processes the file server request while the second file server maintains a copy in its file server request log. Each file server operates using a file system that maintains consistent state after each file server request. On failover, the second file server can perform those file server requests in its file server request log since the most recent consistent state. There is no single point of failure that prevents access to any individual mass storage element.
CA002323106A 1998-03-10 1999-03-08 File server storage arrangement Expired - Fee Related CA2323106C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/037,652 1998-03-10
US09/037,652 US6317844B1 (en) 1998-03-10 1998-03-10 File server storage arrangement
PCT/US1999/005071 WO1999046680A1 (en) 1998-03-10 1999-03-08 Highly available file servers

Publications (2)

Publication Number Publication Date
CA2323106A1 true CA2323106A1 (en) 1999-09-16
CA2323106C CA2323106C (en) 2005-11-15

Family

ID=21895532

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002323106A Expired - Fee Related CA2323106C (en) 1998-03-10 1999-03-08 File server storage arrangement

Country Status (10)

Country Link
US (2) US6317844B1 (en)
EP (1) EP1062581B1 (en)
JP (1) JP2003517651A (en)
KR (1) KR100604242B1 (en)
CN (1) CN1149480C (en)
AT (1) ATE251778T1 (en)
CA (1) CA2323106C (en)
DE (1) DE69911930T2 (en)
TW (1) TW452686B (en)
WO (1) WO1999046680A1 (en)

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US6317844B1 (en) 2001-11-13
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