CA2211654A1 - Fault tolerant nfs server system and mirroring protocol - Google Patents

Fault tolerant nfs server system and mirroring protocol

Info

Publication number
CA2211654A1
CA2211654A1 CA002211654A CA2211654A CA2211654A1 CA 2211654 A1 CA2211654 A1 CA 2211654A1 CA 002211654 A CA002211654 A CA 002211654A CA 2211654 A CA2211654 A CA 2211654A CA 2211654 A1 CA2211654 A1 CA 2211654A1
Authority
CA
Canada
Prior art keywords
data
server system
communication network
data transfer
fault tolerant
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
CA002211654A
Other languages
French (fr)
Other versions
CA2211654C (en
Inventor
David R. Kandasamy
Mitchel B. Butler
Andrew L. Foss
Bradley M. Peterson
Chintamani M. Patwardhan
Michael T. Ribble
Dieter Rothmeier
Gaudencio Ramil
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
Auspex Systems, Inc.
David R. Kandasamy
Mitchel B. Butler
Andrew L. Foss
Bradley M. Peterson
Chintamani M. Patwardhan
Michael T. Ribble
Dieter Rothmeier
Gaudencio Ramil
Network Appliance, 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 Auspex Systems, Inc., David R. Kandasamy, Mitchel B. Butler, Andrew L. Foss, Bradley M. Peterson, Chintamani M. Patwardhan, Michael T. Ribble, Dieter Rothmeier, Gaudencio Ramil, Network Appliance, Inc. filed Critical Auspex Systems, Inc.
Publication of CA2211654A1 publication Critical patent/CA2211654A1/en
Application granted granted Critical
Publication of CA2211654C publication Critical patent/CA2211654C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/74—Masking faults in memories by using spares or by reconfiguring using duplex memories, i.e. using dual copies
    • 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
    • G06F11/2048—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 neither address space nor persistent storage
    • 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
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/18—File system types
    • G06F16/182—Distributed file systems
    • G06F16/1824—Distributed file systems implemented using Network-attached Storage [NAS] architecture
    • G06F16/183—Provision of network file services by network file servers, e.g. by using NFS, CIFS
    • 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
    • G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • G06F11/1662—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit the resynchronized component or unit being a persistent storage device
    • 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
    • G06F11/2038—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 with a single idle spare processing component

Abstract

A network computer system providing for the fault tolerant storage and retrieval of data files includes a client system connected to a data communication network that may source a first data transfer request to said data communication network for the transfer or retrieval of data. A first server system, including first medium for storing data files, is connected to the data communication network so as to be responsive to first data transfer requests.
A second server system, including second medium for storing data files is also connected to said data communication network to also be responsive to first data transfer requests. A control protocol, established between the first and second server systems, coordinates an asymmetric response by the first and second server systems to a first data transfer request, such that file data transferred by the client with the first data transfer request is replicated to the first and second storing mediums and such that file data transferred to the client system in response to the first data transfer is non-replicatively provided to the client system by either the first or second server system.
CA002211654A 1995-01-27 1996-01-23 Fault tolerant nfs server system and mirroring protocol Expired - Lifetime CA2211654C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/378,966 US5513314A (en) 1995-01-27 1995-01-27 Fault tolerant NFS server system and mirroring protocol
US08/378,966 1995-01-27
PCT/US1996/001007 WO1996023259A1 (en) 1995-01-27 1996-01-23 Fault tolerant nfs server system and mirroring protocol

Publications (2)

Publication Number Publication Date
CA2211654A1 true CA2211654A1 (en) 1996-08-01
CA2211654C CA2211654C (en) 2009-03-31

Family

ID=23495275

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002211654A Expired - Lifetime CA2211654C (en) 1995-01-27 1996-01-23 Fault tolerant nfs server system and mirroring protocol

Country Status (6)

Country Link
US (1) US5513314A (en)
EP (1) EP0806010A4 (en)
JP (1) JP4005631B2 (en)
AU (1) AU4767796A (en)
CA (1) CA2211654C (en)
WO (1) WO1996023259A1 (en)

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