JPS635539U - - Google Patents
Info
- Publication number
- JPS635539U JPS635539U JP9728586U JP9728586U JPS635539U JP S635539 U JPS635539 U JP S635539U JP 9728586 U JP9728586 U JP 9728586U JP 9728586 U JP9728586 U JP 9728586U JP S635539 U JPS635539 U JP S635539U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- magnetic disk
- abnormality
- write
- cache memory
- 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
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
Description
第1図は本考案の一実施例を示す構成ブロツク
図、第2図は従来装置の構成図である。
1……磁気デイスク装置、2……デイスク制御
回路、4……キヤツシユメモリ、5……バツテリ
ー、6……バツテリー監視回路。
FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram of a conventional device. 1...Magnetic disk device, 2...Disk control circuit, 4...Cache memory, 5...Battery, 6...Battery monitoring circuit.
Claims (1)
おいて、 前記キヤツシユメモリをバツクアツプするバツ
テリーと、 このバツテリーの電圧を監視するバツテリー監
視回路と、 このバツテリー監視回路でバツテリーが正常と
判断したときはライトバツク動作を行い、異常と
判断したときはライトスルー動作を行うように前
気磁気デイスク装置を制御するデイスク制御回路
とを設けたことを特徴とする磁気デイスク制御装
置。[Scope of Claim for Utility Model Registration] A magnetic disk device equipped with a cache memory, comprising: a battery for backing up the cache memory; a battery monitoring circuit for monitoring the voltage of the battery; and a battery monitoring circuit for determining whether the battery is normal. 1. A magnetic disk control device comprising: a disk control circuit that controls a forward magnetic disk device to perform a write-back operation when it is determined that there is an abnormality, and to perform a write-through operation when it is determined that there is an abnormality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9728586U JPS635539U (en) | 1986-06-25 | 1986-06-25 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9728586U JPS635539U (en) | 1986-06-25 | 1986-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS635539U true JPS635539U (en) | 1988-01-14 |
Family
ID=30964080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9728586U Pending JPS635539U (en) | 1986-06-25 | 1986-06-25 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS635539U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01288948A (en) * | 1988-05-16 | 1989-11-21 | Fujitsu Ltd | Memory data protective system |
JPH03208145A (en) * | 1990-01-10 | 1991-09-11 | Matsushita Electric Ind Co Ltd | Information recording and reproducing device |
-
1986
- 1986-06-25 JP JP9728586U patent/JPS635539U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01288948A (en) * | 1988-05-16 | 1989-11-21 | Fujitsu Ltd | Memory data protective system |
JPH03208145A (en) * | 1990-01-10 | 1991-09-11 | Matsushita Electric Ind Co Ltd | Information recording and reproducing device |
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