JPS57146359A - Method and apparatus for data transfer - Google Patents

Method and apparatus for data transfer

Info

Publication number
JPS57146359A
JPS57146359A JP1622582A JP1622582A JPS57146359A JP S57146359 A JPS57146359 A JP S57146359A JP 1622582 A JP1622582 A JP 1622582A JP 1622582 A JP1622582 A JP 1622582A JP S57146359 A JPS57146359 A JP S57146359A
Authority
JP
Japan
Prior art keywords
read
objective
busy
buffer
reaches
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.)
Granted
Application number
JP1622582A
Other languages
Japanese (ja)
Other versions
JPS623455B2 (en
Inventor
Toru Nishigaki
Kazuhiko Omachi
Masahide Aoyama
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 JP1622582A priority Critical patent/JPS57146359A/en
Publication of JPS57146359A publication Critical patent/JPS57146359A/en
Publication of JPS623455B2 publication Critical patent/JPS623455B2/ja
Granted 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)

Abstract

PURPOSE:To improve the performance of a computer system, by starting a read- in from a storage device to a buffer when a controller is busy and trying to couple with the controller with a control section through continuous generation of a set sector completion signal. CONSTITUTION:Magnetic rotating body storage devices 30, 30' and 30'', a data transfer device 10 and a controller 20 are provided. In case of read-in, when a head of the device 30, e.g., reaches an objective sector, if the device 20 is busy, an objective record is read in a buffer 16 in the device 10 and this is transferred to the device 20 when the device 20 is idle. In case of write-out, when a head of the device 30 reaches an objective sector, if the device 20 is busy, data are read in the buffer in the device 10 via the device 20 when the device 20 is idle. Next, when the head of the device 30 reaches the objective sector, it is written out.
JP1622582A 1982-02-05 1982-02-05 Method and apparatus for data transfer Granted JPS57146359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1622582A JPS57146359A (en) 1982-02-05 1982-02-05 Method and apparatus for data transfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1622582A JPS57146359A (en) 1982-02-05 1982-02-05 Method and apparatus for data transfer

Publications (2)

Publication Number Publication Date
JPS57146359A true JPS57146359A (en) 1982-09-09
JPS623455B2 JPS623455B2 (en) 1987-01-24

Family

ID=11910591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1622582A Granted JPS57146359A (en) 1982-02-05 1982-02-05 Method and apparatus for data transfer

Country Status (1)

Country Link
JP (1) JPS57146359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410666A (en) * 1989-09-22 1995-04-25 Hitachi, Ltd. On-line dumping system and disk sub system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114847A (en) * 1973-02-28 1974-11-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114847A (en) * 1973-02-28 1974-11-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410666A (en) * 1989-09-22 1995-04-25 Hitachi, Ltd. On-line dumping system and disk sub system
US5606684A (en) * 1989-09-22 1997-02-25 Hitachi, Ltd. On-line dumping system and disk sub-system

Also Published As

Publication number Publication date
JPS623455B2 (en) 1987-01-24

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