JPS57197664A - Disc subsystem - Google Patents

Disc subsystem

Info

Publication number
JPS57197664A
JPS57197664A JP56081063A JP8106381A JPS57197664A JP S57197664 A JPS57197664 A JP S57197664A JP 56081063 A JP56081063 A JP 56081063A JP 8106381 A JP8106381 A JP 8106381A JP S57197664 A JPS57197664 A JP S57197664A
Authority
JP
Japan
Prior art keywords
devices
write
index point
disc driving
disc
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.)
Pending
Application number
JP56081063A
Other languages
Japanese (ja)
Inventor
Tadayuki Ichiba
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56081063A priority Critical patent/JPS57197664A/en
Publication of JPS57197664A publication Critical patent/JPS57197664A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Rotational Drive Of Disk (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To perform write in two or more discs, by connecting two or more sets of disc driving devices with synchronized index point (start point of read and write) to a common disc controller. CONSTITUTION:Disc driving devices 13 and 14 synchronized with index point are connected to a commo disc driving device 12 via a signal line 16. The device 12 is connected to an upper-order central processing device 11 via a signal line 15. Since the synchronism of index point of the devices 13 and 14 is taken, the simultaneous write of data transmitted from the central processing device 11 to both the devices 13 and 14 can simply be made.
JP56081063A 1981-05-29 1981-05-29 Disc subsystem Pending JPS57197664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081063A JPS57197664A (en) 1981-05-29 1981-05-29 Disc subsystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081063A JPS57197664A (en) 1981-05-29 1981-05-29 Disc subsystem

Publications (1)

Publication Number Publication Date
JPS57197664A true JPS57197664A (en) 1982-12-03

Family

ID=13735934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081063A Pending JPS57197664A (en) 1981-05-29 1981-05-29 Disc subsystem

Country Status (1)

Country Link
JP (1) JPS57197664A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279912A2 (en) * 1987-02-26 1988-08-31 International Business Machines Corporation Multiple copy data mechanism on synchronous disk drives
WO1990001737A1 (en) * 1988-08-02 1990-02-22 Cray Research, Inc. Single disk emulation for synchronous disk array
US5218689A (en) * 1988-08-16 1993-06-08 Cray Research, Inc. Single disk emulation interface for an array of asynchronously operating disk drives
US5283791A (en) * 1988-08-02 1994-02-01 Cray Research Systems, Inc. Error recovery method and apparatus for high performance disk drives
US6631443B1 (en) 1990-02-26 2003-10-07 Hitachi, Ltd. Disk storage system having capability for performing parallel read operation
US7861034B2 (en) 1990-02-26 2010-12-28 Hitachi, Ltd. Load distribution of multiple disks

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210736A (en) * 1975-07-15 1977-01-27 Matsushita Electric Ind Co Ltd Thermal printing head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210736A (en) * 1975-07-15 1977-01-27 Matsushita Electric Ind Co Ltd Thermal printing head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279912A2 (en) * 1987-02-26 1988-08-31 International Business Machines Corporation Multiple copy data mechanism on synchronous disk drives
WO1990001737A1 (en) * 1988-08-02 1990-02-22 Cray Research, Inc. Single disk emulation for synchronous disk array
US5283791A (en) * 1988-08-02 1994-02-01 Cray Research Systems, Inc. Error recovery method and apparatus for high performance disk drives
US5218689A (en) * 1988-08-16 1993-06-08 Cray Research, Inc. Single disk emulation interface for an array of asynchronously operating disk drives
US6631443B1 (en) 1990-02-26 2003-10-07 Hitachi, Ltd. Disk storage system having capability for performing parallel read operation
US6938125B2 (en) 1990-02-26 2005-08-30 Hitachi, Ltd. Storage system with data prefetch function
US7861034B2 (en) 1990-02-26 2010-12-28 Hitachi, Ltd. Load distribution of multiple disks

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