JPS6476338A - Duplexed file control system - Google Patents
Duplexed file control systemInfo
- Publication number
- JPS6476338A JPS6476338A JP62235545A JP23554587A JPS6476338A JP S6476338 A JPS6476338 A JP S6476338A JP 62235545 A JP62235545 A JP 62235545A JP 23554587 A JP23554587 A JP 23554587A JP S6476338 A JPS6476338 A JP S6476338A
- Authority
- JP
- Japan
- Prior art keywords
- data
- recovery
- file
- read
- abnormality
- 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 ensure automatic substitute processing in case one of two data read out of a duplex file has abnormality by writing the data read out of a nondefective file for recovery and then storing said data into a substitute space when the recovery is impossible. CONSTITUTION:When a read command is detected by a command analyzing part 1-1, a disk controller 1-3 reads data out of the duplexed files stored in a disk devices 2-1 and 2-2 respectively. Then the data read out earlier is sent to a read requester CPU4. Thus the read processing is ended. When the abnormality is detected out the read data, a substitute processing part 1-2 writes again the data read out of the nondefective file into the same address of a defective file for recovery. Then said data is stored in a spare substitute space if the recovery is impossible. In such a way, the abnormality if occurred in one of two duplex files can be automatically recovered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235545A JPS6476338A (en) | 1987-09-18 | 1987-09-18 | Duplexed file control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235545A JPS6476338A (en) | 1987-09-18 | 1987-09-18 | Duplexed file control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6476338A true JPS6476338A (en) | 1989-03-22 |
Family
ID=16987567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62235545A Pending JPS6476338A (en) | 1987-09-18 | 1987-09-18 | Duplexed file control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6476338A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8560925B2 (en) | 2011-04-05 | 2013-10-15 | Denso International America, Inc. | System and method for handling bad bit errors |
-
1987
- 1987-09-18 JP JP62235545A patent/JPS6476338A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8560925B2 (en) | 2011-04-05 | 2013-10-15 | Denso International America, Inc. | System and method for handling bad bit errors |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB8915875D0 (en) | A method of operating a data processing system | |
GB1184160A (en) | Data Processing Systems | |
CA2063379A1 (en) | Method of operating a data processing system | |
JPS55115121A (en) | Input and output control unit possible for duplicated recording | |
JPS6476338A (en) | Duplexed file control system | |
JPS56127262A (en) | Peripheral storage controller | |
ES2005370A6 (en) | Method to execute two instruction sequences in an order determined in advance. | |
JPS55166745A (en) | Maintenance information holding system by controller | |
JPS57189398A (en) | Control system for memory system | |
EP0375892A3 (en) | Data processing system | |
GB8333984D0 (en) | Computer controlled systems | |
JPS5745647A (en) | Control storage control system | |
JPS5537625A (en) | Data storing read system | |
JPS58182774A (en) | Controller | |
JPS583015A (en) | Microprogram storing system | |
JPS57100548A (en) | File controller | |
JPS57117195A (en) | Computer device | |
JPS57111899A (en) | Constituting system of storage device | |
JPS57143646A (en) | Error recovery system for logical device | |
JPS61224052A (en) | Data securing system | |
KR890015139A (en) | Pseudo-scramble system of computer | |
JPS6441044A (en) | Data transfer system | |
JPS57210499A (en) | Storage device system | |
JPS6446860A (en) | Disk cache device | |
JPS57128000A (en) | Error recovery system for logical device |