JPS5730066A - Access control system for duplicated file - Google Patents

Access control system for duplicated file

Info

Publication number
JPS5730066A
JPS5730066A JP10460980A JP10460980A JPS5730066A JP S5730066 A JPS5730066 A JP S5730066A JP 10460980 A JP10460980 A JP 10460980A JP 10460980 A JP10460980 A JP 10460980A JP S5730066 A JPS5730066 A JP S5730066A
Authority
JP
Japan
Prior art keywords
file
magnetic disc
control system
access control
vacant
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
JP10460980A
Other languages
Japanese (ja)
Other versions
JPS6128128B2 (en
Inventor
Tatsuo Horikoshi
Shigeo Tanabe
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom 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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP10460980A priority Critical patent/JPS5730066A/en
Publication of JPS5730066A publication Critical patent/JPS5730066A/en
Publication of JPS6128128B2 publication Critical patent/JPS6128128B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/16—Handling requests for interconnection or transfer for access to memory bus

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE:To reduce the waiting time for file access, by finding out a vacant magnetic disc device and loading data from this magnetic disc device to a main memory. CONSTITUTION:A read request accessing a file B is produced, and when a magnetic disc 3-A is vacant and a magnetic disc device 3-B is busy, the file B of the magnetic disc device 3-A is accessed. When a read request C accessing the file B is produced and the device 3-A is busy and the device 3-B is vacant, the file B of the device 3-B is accessed.
JP10460980A 1980-07-30 1980-07-30 Access control system for duplicated file Granted JPS5730066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10460980A JPS5730066A (en) 1980-07-30 1980-07-30 Access control system for duplicated file

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10460980A JPS5730066A (en) 1980-07-30 1980-07-30 Access control system for duplicated file

Publications (2)

Publication Number Publication Date
JPS5730066A true JPS5730066A (en) 1982-02-18
JPS6128128B2 JPS6128128B2 (en) 1986-06-28

Family

ID=14385163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10460980A Granted JPS5730066A (en) 1980-07-30 1980-07-30 Access control system for duplicated file

Country Status (1)

Country Link
JP (1) JPS5730066A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140351A (en) * 1986-12-02 1988-06-11 Nec Corp Multiplex managing system for library file
JPH01171015A (en) * 1987-12-25 1989-07-06 Nec Corp Input/output load dispersion system
US5833380A (en) * 1995-11-21 1998-11-10 Seiko Epson Corporation Printer having cutting apparatus and protective device for use in a printer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129231U (en) * 1987-02-18 1988-08-24
JPH02292641A (en) * 1989-05-02 1990-12-04 Hitachi Ltd Method for controlling data base

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140351A (en) * 1986-12-02 1988-06-11 Nec Corp Multiplex managing system for library file
JPH01171015A (en) * 1987-12-25 1989-07-06 Nec Corp Input/output load dispersion system
US5833380A (en) * 1995-11-21 1998-11-10 Seiko Epson Corporation Printer having cutting apparatus and protective device for use in a printer

Also Published As

Publication number Publication date
JPS6128128B2 (en) 1986-06-28

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