JPS644970A - Computer system - Google Patents

Computer system

Info

Publication number
JPS644970A
JPS644970A JP16063887A JP16063887A JPS644970A JP S644970 A JPS644970 A JP S644970A JP 16063887 A JP16063887 A JP 16063887A JP 16063887 A JP16063887 A JP 16063887A JP S644970 A JPS644970 A JP S644970A
Authority
JP
Japan
Prior art keywords
magnetic tape
volume
physical
logical
volumes
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
JP16063887A
Other languages
Japanese (ja)
Inventor
Tetsunori Takamiya
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP16063887A priority Critical patent/JPS644970A/en
Publication of JPS644970A publication Critical patent/JPS644970A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To effectively use a magnetic tape volume to a maximum, by dividing and utilizing a physical magnetic tape volume into logical volumes. CONSTITUTION:The titled system is constituted of a central processing unit CPU1-1 and a magnetic tape device MT1-2. A logical volume initialization control means 1 is called, and the logical volume initialization control means 1 initializes a magnetic tape as calculating recording density and gap length between data, and generates plural logical volumes designated by a user in one physical volume. In such a way, it is possible to divide and utilize one magnetic tape into plural physical volumes and to increase the activity efficiency of the magnetic tape.
JP16063887A 1987-06-26 1987-06-26 Computer system Pending JPS644970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16063887A JPS644970A (en) 1987-06-26 1987-06-26 Computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16063887A JPS644970A (en) 1987-06-26 1987-06-26 Computer system

Publications (1)

Publication Number Publication Date
JPS644970A true JPS644970A (en) 1989-01-10

Family

ID=15719258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16063887A Pending JPS644970A (en) 1987-06-26 1987-06-26 Computer system

Country Status (1)

Country Link
JP (1) JPS644970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5940849A (en) * 1995-12-08 1999-08-17 Fujitsu Limited Information memory apparatus and library apparatus using a single magnetic tape shared with a plurality of tasks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5940849A (en) * 1995-12-08 1999-08-17 Fujitsu Limited Information memory apparatus and library apparatus using a single magnetic tape shared with a plurality of tasks

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