JPS54146617A - Method of dividing magnetic disc surface - Google Patents
Method of dividing magnetic disc surfaceInfo
- Publication number
- JPS54146617A JPS54146617A JP5407778A JP5407778A JPS54146617A JP S54146617 A JPS54146617 A JP S54146617A JP 5407778 A JP5407778 A JP 5407778A JP 5407778 A JP5407778 A JP 5407778A JP S54146617 A JPS54146617 A JP S54146617A
- Authority
- JP
- Japan
- Prior art keywords
- cylinders
- magnetic discs
- disc
- capacity
- discs
- 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
Abstract
PURPOSE: To replace a plurality of magnetic discs with little capacity with a small number of magnetic discs with great capacity, by dividing the data ranges of the surfaces of the magnetic discs with great capacity and cylinders in substitute tracks in response to the cylinders of the magnetic discs with little capacity.
CONSTITUTION: When replacing four magnetic discs (Units 0W3) with 2.4M bite with one magnetic disc with 10.1M bite, 75 cylinders until cylinders 0W74 correspond to the unit 0 (200 cylinders of cylinders 0W199) of a disc (24 sector/track). The same is the case units 1W3. Concerning substitute tracks, the substitute tracks (Three cylinders of cylinders 200W203) of the units 0W3 of the disc are let correspond to five cylinders of the cylinders 310W314 of the disc. Thus, a plurality of magnetic discs with little capacity can be replaced with a small number of discs with great capacity.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5407778A JPS54146617A (en) | 1978-05-09 | 1978-05-09 | Method of dividing magnetic disc surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5407778A JPS54146617A (en) | 1978-05-09 | 1978-05-09 | Method of dividing magnetic disc surface |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54146617A true JPS54146617A (en) | 1979-11-16 |
Family
ID=12960545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5407778A Pending JPS54146617A (en) | 1978-05-09 | 1978-05-09 | Method of dividing magnetic disc surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54146617A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6631106B1 (en) | 1998-07-21 | 2003-10-07 | Fujitsu Limited | Spare area with a predetermined capacity for a detective sector allocated in each zone |
-
1978
- 1978-05-09 JP JP5407778A patent/JPS54146617A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6631106B1 (en) | 1998-07-21 | 2003-10-07 | Fujitsu Limited | Spare area with a predetermined capacity for a detective sector allocated in each zone |
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