JPS6296741U - - Google Patents
Info
- Publication number
- JPS6296741U JPS6296741U JP18706485U JP18706485U JPS6296741U JP S6296741 U JPS6296741 U JP S6296741U JP 18706485 U JP18706485 U JP 18706485U JP 18706485 U JP18706485 U JP 18706485U JP S6296741 U JPS6296741 U JP S6296741U
- Authority
- JP
- Japan
- Prior art keywords
- control device
- disk unit
- access
- disk
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
図は本考案の実施例のブロツク図である。
主要部分の符号の説明、１……上位装置、３，
４……デイスクユニツト、２１……書込み制御部
、２２……アクセス識別部、２３……書込み許可
コマンド検出部。
The figure is a block diagram of an embodiment of the present invention. Explanation of symbols of main parts, 1... Upper device, 3,
4... Disk unit, 21... Write control unit, 22... Access identification unit, 23... Write permission command detection unit.
Claims (1)
行われる第１のデイスクユニツトと、前記アクセ
スが極めて少ない第２のデイスクユニツトとを有
する磁気デイスク装置の制御装置であつて、前記
第２のデイスクユニツトへのデータ書込みが必要
に場合にのみ前記上位装置からデータ書込みアク
セスと更には書込み許可コマンドとを発行するよ
うにし、前記データ書込みアクセス及び前記書込
み許可コマンドの両者が同時に発行されたときだ
け前記第２のデイスクユニツトへの書込みを行う
ようにしたことを特徴とする磁気デイスク制御装
置。 A control device for a magnetic disk device having a first disk unit to which data write access is frequently performed from a host device and a second disk unit to which the access is extremely infrequent, the control device comprising: The data write access and further the write permission command are issued from the higher-level device only when data writing is necessary, and the second A magnetic disk control device characterized in that it writes to a disk unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18706485U JPS6296741U (en) | 1985-12-04 | 1985-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18706485U JPS6296741U (en) | 1985-12-04 | 1985-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6296741U true JPS6296741U (en) | 1987-06-20 |
Family
ID=31137194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18706485U Pending JPS6296741U (en) | 1985-12-04 | 1985-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6296741U (en) |
-
1985
- 1985-12-04 JP JP18706485U patent/JPS6296741U/ja active Pending
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