JPS6449167A - Track emulation system for magnetic disk device - Google Patents
Track emulation system for magnetic disk deviceInfo
- Publication number
- JPS6449167A JPS6449167A JP20544087A JP20544087A JPS6449167A JP S6449167 A JPS6449167 A JP S6449167A JP 20544087 A JP20544087 A JP 20544087A JP 20544087 A JP20544087 A JP 20544087A JP S6449167 A JPS6449167 A JP S6449167A
- Authority
- JP
- Japan
- Prior art keywords
- track
- capacity
- data
- added
- magnetic disk
- 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
Links
Abstract
PURPOSE:To obtain high reliability by means of a simple constitution without adding a specific circuit by interchanging the capacity of tracks on the basis of a segment number in a counting part to which an error correcting code (ECC) is added. CONSTITUTION:A data transfer control means 16 for controlling the transfer of writing or reading data between a master device 10 and a storage mechanism 14 in a large capacity magnetic disk device 12 on the basis of an old machine track format shown in a drawing is connected to a control adaptor in the device 12. When the means 16 transfers data in the track format, a detecting means 18 detects the value of a segment number. Every time when the means 16 transfers data in a key part and a data part, the length of a gap G2 and the length of an object to be transferred are added to an adding means 20. At the time of deciding that the added value reached to the capacity of a track, a track capacity deciding means 22 informs the result to the device 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20544087A JPH0799608B2 (en) | 1987-08-19 | 1987-08-19 | Track emulation method for magnetic disk unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20544087A JPH0799608B2 (en) | 1987-08-19 | 1987-08-19 | Track emulation method for magnetic disk unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449167A true JPS6449167A (en) | 1989-02-23 |
JPH0799608B2 JPH0799608B2 (en) | 1995-10-25 |
Family
ID=16506910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20544087A Expired - Lifetime JPH0799608B2 (en) | 1987-08-19 | 1987-08-19 | Track emulation method for magnetic disk unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0799608B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04205970A (en) * | 1990-11-30 | 1992-07-28 | Fujitsu Ltd | Disk track emulation method |
JPH08180600A (en) * | 1994-12-27 | 1996-07-12 | Nec Corp | Magnetic disk unit |
-
1987
- 1987-08-19 JP JP20544087A patent/JPH0799608B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04205970A (en) * | 1990-11-30 | 1992-07-28 | Fujitsu Ltd | Disk track emulation method |
US5590311A (en) * | 1990-11-30 | 1996-12-31 | Fujitsu Limited | System and method for emulating disk tracks to maintain data format compatibility |
JPH08180600A (en) * | 1994-12-27 | 1996-07-12 | Nec Corp | Magnetic disk unit |
Also Published As
Publication number | Publication date |
---|---|
JPH0799608B2 (en) | 1995-10-25 |
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