MY113983A - An improved data storage device and method of operation - Google Patents

An improved data storage device and method of operation

Info

Publication number
MY113983A
MY113983A MYPI94003234A MYPI19943234A MY113983A MY 113983 A MY113983 A MY 113983A MY PI94003234 A MYPI94003234 A MY PI94003234A MY PI19943234 A MYPI19943234 A MY PI19943234A MY 113983 A MY113983 A MY 113983A
Authority
MY
Malaysia
Prior art keywords
parity
drive
new
old
data
Prior art date
Application number
MYPI94003234A
Inventor
Burghardt Bandy Peter
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of MY113983A publication Critical patent/MY113983A/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • 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 OR CALCULATING; 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
    • G06F2211/1054—Parity-fast hardware, i.e. dedicated fast hardware for RAID systems with parity

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

AN IMPROVED STORAGE DEVICE (13), SUCH AS A DISK DRIVE, FOR USE IN AN ARRAY OF DRIVES. EACH DRIVE HAS LOGIC AND EXCLUSIVE OR CALCULATION MEANS (31). DATA TO BE WRITTEN IS SENT TO THE TARGET DISK DRIVE (13-I) FROM THE HOST COMPUTER (11) UNDER A NEW COMMAND THAT INSTRUCTS THE TARGET DRIVE TO GENERATE PART OF THE NEW PARITY, AND MAY ALSO IDENTIFY THE PARITY DRIVE (13-P). THE TARGET DEVICE READS THE OLD DATA (119) FROM ITS MEDIA (27-I). GENERATES A PARITY SYNDROME (127), STORES THE NEW DATA (113) AND THEN INITIATES COMMUNICATION WITH THE IDENTIFIED PARITY DRIVE, INSTRUCTING THE PARITY DRIVE TO READ THE OLD PARITY (219) AND GENERATE THE NEW PARITY INFORMATION (227) FROM THE PARITY SYNDROME AND THE OLD PARITY. THE PARITY DRIVE, AFTER GENERATING THE NEW PARITY, WRITES THE NEW PARITY ONTO ITS MEDIA (27-P). ALL WITHOUT FURTHER HOST OR HOST I/O ACTION. FIGURE 2
MYPI94003234A 1994-01-07 1994-12-05 An improved data storage device and method of operation MY113983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17895594A 1994-01-07 1994-01-07

Publications (1)

Publication Number Publication Date
MY113983A true MY113983A (en) 2002-07-31

Family

ID=22654605

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI94003234A MY113983A (en) 1994-01-07 1994-12-05 An improved data storage device and method of operation

Country Status (7)

Country Link
US (1) US5574736A (en)
EP (1) EP0662660A1 (en)
JP (1) JP3072700B2 (en)
KR (1) KR0162121B1 (en)
CA (1) CA2134016A1 (en)
MY (1) MY113983A (en)
SG (1) SG42319A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894564A (en) * 1995-06-07 1999-04-13 International Business Machines Corporation System for identifying memory segment bounded by previously accessed memory locations within data block and transferring thereof only when the segment has been changed
US6154810A (en) * 1995-08-28 2000-11-28 Apple Computer, Inc. System and method for utilizing the memory of a portable computer as a disk cache while in SCSI target mode
US6108812A (en) * 1996-06-20 2000-08-22 Lsi Logic Corporation Target device XOR engine
US5889934A (en) * 1997-02-24 1999-03-30 Data General Corporation Data validation system for a group of data storage disks
US5935260A (en) * 1997-05-02 1999-08-10 Emc Corporation Method and apparatus for providing system level errors in a large disk array storage system
US6112255A (en) * 1997-11-13 2000-08-29 International Business Machines Corporation Method and means for managing disk drive level logic and buffer modified access paths for enhanced raid array data rebuild and write update operations
CN1291127C (en) 2002-03-01 2006-12-20 盖慈有限公司 Transfer mechanism
JP2004199319A (en) * 2002-12-18 2004-07-15 Konica Minolta Holdings Inc Information processor
US7380198B2 (en) * 2003-06-11 2008-05-27 International Business Machines Corporation System and method for detecting write errors in a storage device
GB2402803B (en) * 2003-06-11 2006-06-28 Ibm Arrangement and method for detection of write errors in a storage system
US10585749B2 (en) * 2017-08-10 2020-03-10 Samsung Electronics Co., Ltd. System and method for distributed erasure coding
KR20190085642A (en) * 2018-01-11 2019-07-19 에스케이하이닉스 주식회사 Memory system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870643A (en) * 1987-11-06 1989-09-26 Micropolis Corporation Parallel drive array storage system
US4989206A (en) * 1988-06-28 1991-01-29 Storage Technology Corporation Disk drive memory
JP2603757B2 (en) * 1990-11-30 1997-04-23 富士通株式会社 Method of controlling array disk device
US5191584A (en) * 1991-02-20 1993-03-02 Micropolis Corporation Mass storage array with efficient parity calculation
US5317713A (en) * 1991-09-19 1994-05-31 Quantum Corporation Micro-winchester disk drive having on-board segmented cache memory
US5379417A (en) * 1991-11-25 1995-01-03 Tandem Computers Incorporated System and method for ensuring write data integrity in a redundant array data storage system
JPH05158621A (en) * 1991-12-04 1993-06-25 Hitachi Ltd Disk device and disk array device
US5398253A (en) * 1992-03-11 1995-03-14 Emc Corporation Storage unit generation of redundancy information in a redundant storage array system
US5493574A (en) * 1992-09-24 1996-02-20 Zilog, Inc. Power efficient RAM disk and a method of emulating a rotating memory disk
DE4309148A1 (en) * 1993-03-22 1994-09-29 Siemens Nixdorf Inf Syst Disk array with load balancing
US5367669A (en) * 1993-03-23 1994-11-22 Eclipse Technologies, Inc. Fault tolerant hard disk array controller

Also Published As

Publication number Publication date
JPH07219719A (en) 1995-08-18
KR0162121B1 (en) 1999-01-15
SG42319A1 (en) 1997-08-15
CA2134016A1 (en) 1995-07-08
EP0662660A1 (en) 1995-07-12
KR950024098A (en) 1995-08-21
JP3072700B2 (en) 2000-07-31
US5574736A (en) 1996-11-12

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