JPS5680896A - Main memory device information recovery system - Google Patents

Main memory device information recovery system

Info

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
Application number
JP15666979A
Other languages
Japanese (ja)
Other versions
JPS603225B2 (en
Inventor
Masakazu Suzuki
Katsumi Matsuo
Hiroyuki Nagao
Kazuo Sugawara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54156669A priority Critical patent/JPS603225B2/en
Publication of JPS5680896A publication Critical patent/JPS5680896A/en
Publication of JPS603225B2 publication Critical patent/JPS603225B2/en
Expired legal-status Critical Current

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
JP54156669A 1979-12-03 1979-12-03 Main storage information recovery method Expired JPS603225B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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