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JPS56148800A - Restoration system for main storage device - Google Patents

Restoration system for main storage device

Info

Publication number
JPS56148800A
JPS56148800A JP5254280A JP5254280A JPS56148800A JP S56148800 A JPS56148800 A JP S56148800A JP 5254280 A JP5254280 A JP 5254280A JP 5254280 A JP5254280 A JP 5254280A JP S56148800 A JPS56148800 A JP S56148800A
Authority
JP
Japan
Prior art keywords
storage device
main storage
fault
control unit
unit
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
Application number
JP5254280A
Other languages
Japanese (ja)
Inventor
Katsuiku Hanai
Hiroyuki Nagao
Seietsu Sakamoto
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 JP5254280A priority Critical patent/JPS56148800A/en
Publication of JPS56148800A publication Critical patent/JPS56148800A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE:To restore a main storage device rapidly and accurately by monitoring the control information on the main storage device in a stand-by system control unit through CPU in the same unit and by changing information transfer systems via CPU in an in-use system control unit when a fault occurs. CONSTITUTION:All control information 8' in main storage device 7' of stand-by system control unit 5' similar to in-use control unit system 1' of an electronic switching equipment, etc., is monitored by CPU6' of unit 5' and faults are all detected and never latent. On detecting a fault, CPU6' reports that to CPU2' of unit 1' via information transmission line 11' and then CPU2' changes information transfer path 10' over to information transfer path 13'. Thus, control information from external storage device 9' is rerestored in device 7' via CPU6' to correct the fault. This constitution restores the main storage device rapidly and securely without any latent fault.
JP5254280A 1980-04-21 1980-04-21 Restoration system for main storage device Pending JPS56148800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5254280A JPS56148800A (en) 1980-04-21 1980-04-21 Restoration system for main storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5254280A JPS56148800A (en) 1980-04-21 1980-04-21 Restoration system for main storage device

Publications (1)

Publication Number Publication Date
JPS56148800A true JPS56148800A (en) 1981-11-18

Family

ID=12917659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5254280A Pending JPS56148800A (en) 1980-04-21 1980-04-21 Restoration system for main storage device

Country Status (1)

Country Link
JP (1) JPS56148800A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914055A (en) * 1982-07-14 1984-01-24 Shimadzu Corp Duplex stand-by cpu system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914055A (en) * 1982-07-14 1984-01-24 Shimadzu Corp Duplex stand-by cpu system

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