DE69130799D1 - Verfahren und gerät um den datenfluss zwischen einem rechner und speichervorrichtungen zu steuern - Google Patents

Verfahren und gerät um den datenfluss zwischen einem rechner und speichervorrichtungen zu steuern

Info

Publication number
DE69130799D1
DE69130799D1 DE69130799T DE69130799T DE69130799D1 DE 69130799 D1 DE69130799 D1 DE 69130799D1 DE 69130799 T DE69130799 T DE 69130799T DE 69130799 T DE69130799 T DE 69130799T DE 69130799 D1 DE69130799 D1 DE 69130799D1
Authority
DE
Germany
Prior art keywords
level
group
level controllers
computer
memory devices
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.)
Expired - Fee Related
Application number
DE69130799T
Other languages
English (en)
Other versions
DE69130799T2 (de
Inventor
David Powers
David Jaffe
Larry Henson
Hoke Johnson
Joseph Glider
Thomas Idleman
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.)
EMC Corp
Original Assignee
EMC Corp
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 EMC Corp filed Critical EMC Corp
Publication of DE69130799D1 publication Critical patent/DE69130799D1/de
Application granted granted Critical
Publication of DE69130799T2 publication Critical patent/DE69130799T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G06F11/16—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
    • G06F11/2053—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 persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2089—Redundant storage control functionality
    • G06F11/2092—Techniques of failing over between control units
    • 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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • 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
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • 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
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
DE69130799T 1990-04-06 1991-04-03 Verfahren und gerät um den datenfluss zwischen einem rechner und speichervorrichtungen zu steuern Expired - Fee Related DE69130799T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/506,703 US5212785A (en) 1990-04-06 1990-04-06 Apparatus and method for controlling data flow between a computer and memory devices
PCT/US1991/002314 WO1991017506A1 (en) 1990-04-06 1991-04-03 Apparatus and method for controlling data flow between a computer and memory devices

Publications (2)

Publication Number Publication Date
DE69130799D1 true DE69130799D1 (de) 1999-03-04
DE69130799T2 DE69130799T2 (de) 1999-05-27

Family

ID=24015677

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69130799T Expired - Fee Related DE69130799T2 (de) 1990-04-06 1991-04-03 Verfahren und gerät um den datenfluss zwischen einem rechner und speichervorrichtungen zu steuern

Country Status (5)

Country Link
US (2) US5212785A (de)
EP (1) EP0524247B1 (de)
AU (1) AU7688691A (de)
DE (1) DE69130799T2 (de)
WO (1) WO1991017506A1 (de)

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US6802023B2 (en) 2001-03-15 2004-10-05 Hewlett-Packard Development Company, L.P. Redundant controller data storage system having hot insertion system and method
US6715101B2 (en) 2001-03-15 2004-03-30 Hewlett-Packard Development Company, L.P. Redundant controller data storage system having an on-line controller removal system and method
US6957361B2 (en) * 2001-11-29 2005-10-18 International Business Machines Corporation Method, system, and program for error handling in a dual adaptor system
US6983397B2 (en) * 2001-11-29 2006-01-03 International Business Machines Corporation Method, system, and program for error handling in a dual adaptor system where one adaptor is a master
JP2005301565A (ja) 2004-04-09 2005-10-27 Hitachi Ltd ディスクアレイ装置およびディスクアレイ装置の診断制御方法
US20060020720A1 (en) * 2004-07-23 2006-01-26 Lsi Logic Corporation Multi-controller IO shipping
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Also Published As

Publication number Publication date
EP0524247A1 (de) 1993-01-27
AU7688691A (en) 1991-11-27
US5651110A (en) 1997-07-22
EP0524247A4 (de) 1994-02-16
DE69130799T2 (de) 1999-05-27
WO1991017506A1 (en) 1991-11-14
EP0524247B1 (de) 1999-01-20
US5212785A (en) 1993-05-18

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8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee