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DE69508034D1 - Fehlererkennungs-System und -Verfahren für gespiegelten Speicher zwischen doppelten Plattenspeichersteuerungen - Google Patents

Fehlererkennungs-System und -Verfahren für gespiegelten Speicher zwischen doppelten Plattenspeichersteuerungen

Info

Publication number
DE69508034D1
DE69508034D1 DE69508034T DE69508034T DE69508034D1 DE 69508034 D1 DE69508034 D1 DE 69508034D1 DE 69508034 T DE69508034 T DE 69508034T DE 69508034 T DE69508034 T DE 69508034T DE 69508034 D1 DE69508034 D1 DE 69508034D1
Authority
DE
Germany
Prior art keywords
detection system
fault detection
double disk
mirrored
storage
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
DE69508034T
Other languages
English (en)
Other versions
DE69508034T2 (de
Inventor
Barry J Oldfield
Mark D Petersen
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE69508034D1 publication Critical patent/DE69508034D1/de
Application granted granted Critical
Publication of DE69508034T2 publication Critical patent/DE69508034T2/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
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • 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
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1612—Error detection by comparing the output signals of redundant hardware where the redundant component is persistent storage
    • 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
    • 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
    • G06F2211/109—Sector level checksum or ECC, i.e. sector or stripe level checksum or ECC in addition to the RAID parity calculation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
DE1995608034 1994-10-25 1995-07-11 Fehlererkennungs-System und -Verfahren für gespiegelten Speicher zwischen doppelten Plattenspeichersteuerungen Expired - Fee Related DE69508034T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32955694A 1994-10-25 1994-10-25

Publications (2)

Publication Number Publication Date
DE69508034D1 true DE69508034D1 (de) 1999-04-08
DE69508034T2 DE69508034T2 (de) 1999-08-19

Family

ID=23285961

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995608034 Expired - Fee Related DE69508034T2 (de) 1994-10-25 1995-07-11 Fehlererkennungs-System und -Verfahren für gespiegelten Speicher zwischen doppelten Plattenspeichersteuerungen

Country Status (3)

Country Link
EP (1) EP0709782B1 (de)
JP (1) JP3748117B2 (de)
DE (1) DE69508034T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4748871B2 (ja) * 2001-03-28 2011-08-17 日本信号株式会社 ワンチップマイクロコントローラシステム
US6938124B2 (en) * 2002-07-19 2005-08-30 Hewlett-Packard Development Company, L.P. Hardware assisted communication between processors
US7594135B2 (en) * 2003-12-31 2009-09-22 Sandisk Corporation Flash memory system startup operation
JP4667093B2 (ja) * 2005-03-17 2011-04-06 富士通株式会社 二重化記憶装置及び二重化記憶装置の制御方法
US7873803B2 (en) * 2007-09-25 2011-01-18 Sandisk Corporation Nonvolatile memory with self recovery
US8589737B2 (en) 2008-06-20 2013-11-19 Freescale Semiconductor, Inc. Memory system with redundant data storage and error correction
US9152511B2 (en) 2008-06-20 2015-10-06 Freescale Semiconductor, Inc. System for dynamically distributing an available memory resource to redundant and non-redundant storage areas using RAM routing logic
US8634240B2 (en) 2009-10-28 2014-01-21 SanDisk Technologies, Inc. Non-volatile memory and method with accelerated post-write read to manage errors
US20130031431A1 (en) * 2011-07-28 2013-01-31 Eran Sharon Post-Write Read in Non-Volatile Memories Using Comparison of Data as Written in Binary and Multi-State Formats
US8750042B2 (en) 2011-07-28 2014-06-10 Sandisk Technologies Inc. Combined simultaneous sensing of multiple wordlines in a post-write read (PWR) and detection of NAND failures
US8566671B1 (en) 2012-06-29 2013-10-22 Sandisk Technologies Inc. Configurable accelerated post-write read to manage errors
US20140052906A1 (en) * 2012-08-17 2014-02-20 Rambus Inc. Memory controller responsive to latency-sensitive applications and mixed-granularity access requests
US9213601B2 (en) 2013-12-03 2015-12-15 Sandisk Technologies Inc. Adaptive data re-compaction after post-write read verification operations

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306211A3 (de) * 1987-09-04 1990-09-26 Digital Equipment Corporation Synchronisiertes Doppelrechnersystem
GB8815239D0 (en) * 1988-06-27 1988-08-03 Wisdom Systems Ltd Memory error protection system
DE69321426T2 (de) * 1992-06-05 1999-03-04 Compaq Computer Corp., Houston, Tex. 77070 Plattenantriebsteuergerät mit Nachschreibcachespeicher

Also Published As

Publication number Publication date
JPH08234922A (ja) 1996-09-13
EP0709782A3 (de) 1996-06-12
JP3748117B2 (ja) 2006-02-22
EP0709782B1 (de) 1999-03-03
EP0709782A2 (de) 1996-05-01
DE69508034T2 (de) 1999-08-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee