JPS6435439U - - Google Patents
Info
- Publication number
- JPS6435439U JPS6435439U JP12831387U JP12831387U JPS6435439U JP S6435439 U JPS6435439 U JP S6435439U JP 12831387 U JP12831387 U JP 12831387U JP 12831387 U JP12831387 U JP 12831387U JP S6435439 U JPS6435439 U JP S6435439U
- Authority
- JP
- Japan
- Prior art keywords
- disk device
- nonvolatile memory
- store
- mirrored
- computer
- 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
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
Description
第１図は本考案を実施したミラード・デイスク
装置の構成例を表わす図、第２図ａ，ｂ，ｃは本
考案装置の動作を表わすフローチヤートである。
１……計算機、２１，２２……デイスク装置、
３１，３２……デイスク・インターフエイス、４
……不揮発メモリ、５１，５２……ゲート回路、
６１，６２……スイツチ。
FIG. 1 is a diagram showing an example of the configuration of a mirrored disk device embodying the present invention, and FIGS. 2a, b, and c are flowcharts showing the operation of the device of the present invention. 1... Computer, 21, 22... Disk device,
31, 32...Disk interface, 4
...Nonvolatile memory, 51, 52...Gate circuit,
61, 62...Switch.
Claims (1)
方によつて計算機システムが正常に稼働するよう
に設置した少なくとも２台のデイスク装置からな
るミラード・デイスク装置において、各々のデイ
スク装置が正常であるか異常であるかを表示する
ビツト・データを格納する不揮発メモリを設け、
この不揮発メモリの内容によつて計算機の前記デ
イスク装置に対するアクセスを有効無効とするゲ
ート手段を有することを特徴とするミラード・デ
イスク装置。 In a mirrored disk device consisting of at least two disk devices that store the same data and are installed so that the computer system can operate normally even if one fails, check whether each disk device is normal. A nonvolatile memory is provided to store bit data that indicates whether there is an abnormality.
A mirrored disk device comprising gate means for validating or invalidating a computer's access to the disk device based on the contents of the nonvolatile memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12831387U JPS6435439U (en) | 1987-08-24 | 1987-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12831387U JPS6435439U (en) | 1987-08-24 | 1987-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6435439U true JPS6435439U (en) | 1989-03-03 |
Family
ID=31381535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12831387U Pending JPS6435439U (en) | 1987-08-24 | 1987-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6435439U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862899A (en) * | 1981-10-08 | 1983-04-14 | Toshiba Corp | State holding system of dual type bulk system |
-
1987
- 1987-08-24 JP JP12831387U patent/JPS6435439U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862899A (en) * | 1981-10-08 | 1983-04-14 | Toshiba Corp | State holding system of dual type bulk system |
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