DE69219208D1 - Verteilter Ersatz in DASD-Feldern - Google Patents

Verteilter Ersatz in DASD-Feldern

Info

Publication number
DE69219208D1
DE69219208D1 DE69219208T DE69219208T DE69219208D1 DE 69219208 D1 DE69219208 D1 DE 69219208D1 DE 69219208 T DE69219208 T DE 69219208T DE 69219208 T DE69219208 T DE 69219208T DE 69219208 D1 DE69219208 D1 DE 69219208D1
Authority
DE
Germany
Prior art keywords
spare
parity
accesses
data
blocks
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 - Lifetime
Application number
DE69219208T
Other languages
English (en)
Other versions
DE69219208T2 (de
Inventor
Jaishankar Moothedath Menon
Richard Lewis Matson
Spencer Wah-Fung Ng
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69219208D1 publication Critical patent/DE69219208D1/de
Publication of DE69219208T2 publication Critical patent/DE69219208T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06F11/2094—Redundant storage or storage space
    • 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
    • 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
    • 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
    • G11C29/88—Masking faults in memories by using spares or by reconfiguring with partially good memories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/10—Indexing scheme relating to G06F11/10
    • G06F2211/1002—Indexing scheme relating to G06F11/1076
    • G06F2211/1028—Distributed, i.e. distributed RAID systems with parity
DE69219208T 1991-06-13 1992-06-08 Verteilter Ersatz in DASD-Feldern Expired - Lifetime DE69219208T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/714,969 US5258984A (en) 1991-06-13 1991-06-13 Method and means for distributed sparing in DASD arrays

Publications (2)

Publication Number Publication Date
DE69219208D1 true DE69219208D1 (de) 1997-05-28
DE69219208T2 DE69219208T2 (de) 1997-10-16

Family

ID=24872213

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69219208T Expired - Lifetime DE69219208T2 (de) 1991-06-13 1992-06-08 Verteilter Ersatz in DASD-Feldern

Country Status (9)

Country Link
US (1) US5258984A (de)
EP (1) EP0518603B1 (de)
JP (1) JPH0724039B2 (de)
KR (1) KR940011039B1 (de)
BR (1) BR9202160A (de)
CA (1) CA2063897C (de)
DE (1) DE69219208T2 (de)
HK (1) HK1000076A1 (de)
TW (1) TW210386B (de)

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Also Published As

Publication number Publication date
EP0518603B1 (de) 1997-04-23
DE69219208T2 (de) 1997-10-16
US5258984A (en) 1993-11-02
CA2063897A1 (en) 1992-12-14
TW210386B (de) 1993-08-01
CA2063897C (en) 1998-05-05
JPH0724039B2 (ja) 1995-03-15
EP0518603A2 (de) 1992-12-16
EP0518603A3 (en) 1993-10-06
BR9202160A (pt) 1993-02-02
KR940011039B1 (ko) 1994-11-22
JPH05100960A (ja) 1993-04-23
HK1000076A1 (en) 1997-11-14

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