JPS644970A - Computer system - Google Patents
Computer systemInfo
- 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
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.
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)
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 |
-
1987
- 1987-06-26 JP JP16063887A patent/JPS644970A/en active Pending
Cited By (1)
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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