JPS5680896A - Main memory device information recovery system - Google Patents
Main memory device information recovery systemInfo
- Publication number
- JPS5680896A JPS5680896A JP15666979A JP15666979A JPS5680896A JP S5680896 A JPS5680896 A JP S5680896A JP 15666979 A JP15666979 A JP 15666979A JP 15666979 A JP15666979 A JP 15666979A JP S5680896 A JPS5680896 A JP S5680896A
- Authority
- JP
- Japan
- Prior art keywords
- failure
- memory device
- main memory
- information
- function
- 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
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Hardware Redundancy (AREA)
Abstract
PURPOSE: To shorten a diagnosis recovery period and reduce the possibility of a palarysis generation of the processing function as much as possible by providing a mean for judging the cause during the failure of a main memory device and restoring the information and disposing a means for restarting the parallel duplication.
CONSTITUTION: When a failure is detected in a main memory device MM0, a central control device CC0' moves an exchange processing to a preliminary system and the processing is stopped. The preliminary central control device CC1' inspects a data received from the information transfer line 5. When the failure of the device MM0 is detected, initiates the parallel duplex operation restarting part PS, and the initiation of the failure discriminating portion TD is commanded to the device CC0. The discriminating part TD examines the function of the device MM0. When it is normal, the cause is judged as an error of the stored information, and the data is restored in the device MM0 from the external memory device EM0. Thereby the device CC' becomes newly a constant system and is restarted. When the disciminating TD is judged as its function is abnormal, it is informed to the device CC', the device CC' stops the operation of the discriminating portion TD of the device CC0' by a restart portion PS, and the failure information is provided to the maintenance personnel by a typewriter etc. for diagnosis and repair.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54156669A JPS603225B2 (en) | 1979-12-03 | 1979-12-03 | Main storage information recovery method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54156669A JPS603225B2 (en) | 1979-12-03 | 1979-12-03 | Main storage information recovery method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5680896A true JPS5680896A (en) | 1981-07-02 |
JPS603225B2 JPS603225B2 (en) | 1985-01-26 |
Family
ID=15632708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54156669A Expired JPS603225B2 (en) | 1979-12-03 | 1979-12-03 | Main storage information recovery method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS603225B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5710845A (en) * | 1980-06-23 | 1982-01-20 | Hitachi Ltd | Diagnostic method of other system |
JPS58134456A (en) * | 1982-02-04 | 1983-08-10 | Dainippon Printing Co Ltd | Ic card |
JPH07239799A (en) * | 1994-02-22 | 1995-09-12 | Internatl Business Mach Corp <Ibm> | Method for provision of remote data shadowing and remote data duplex system |
-
1979
- 1979-12-03 JP JP54156669A patent/JPS603225B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5710845A (en) * | 1980-06-23 | 1982-01-20 | Hitachi Ltd | Diagnostic method of other system |
JPS634210B2 (en) * | 1980-06-23 | 1988-01-28 | Hitachi Ltd | |
JPS58134456A (en) * | 1982-02-04 | 1983-08-10 | Dainippon Printing Co Ltd | Ic card |
JPH0241073B2 (en) * | 1982-02-04 | 1990-09-14 | Dainippon Printing Co Ltd | |
JPH07239799A (en) * | 1994-02-22 | 1995-09-12 | Internatl Business Mach Corp <Ibm> | Method for provision of remote data shadowing and remote data duplex system |
Also Published As
Publication number | Publication date |
---|---|
JPS603225B2 (en) | 1985-01-26 |
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