JPS5730069A - Restoration system for duplex system - Google Patents

Restoration system for duplex system

Info

Publication number
JPS5730069A
JPS5730069A JP10460580A JP10460580A JPS5730069A JP S5730069 A JPS5730069 A JP S5730069A JP 10460580 A JP10460580 A JP 10460580A JP 10460580 A JP10460580 A JP 10460580A JP S5730069 A JPS5730069 A JP S5730069A
Authority
JP
Japan
Prior art keywords
file
processing mode
sub
existing system
spare
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
JP10460580A
Other languages
Japanese (ja)
Other versions
JPS5836378B2 (en
Inventor
Tetsuo Adachi
Yutaka Eguchi
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom Corp
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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP55104605A priority Critical patent/JPS5836378B2/en
Publication of JPS5730069A publication Critical patent/JPS5730069A/en
Publication of JPS5836378B2 publication Critical patent/JPS5836378B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Abstract

PURPOSE:To realize a simple duplex system, by making effective the spare system communication line 13 through the operation of a line switching means, when the existing system processor is in failure. CONSTITUTION:A processing data with an existing system processor 6 is sequentially written in a maste file 8 at the existing system processing mode. The processing data by the device 6 is written in a sub-file 9 via a coupler 10 between the processors, which passes through the processing data with the device 6 at the existing system processing mode to the sub-file 9. On the other hand, when the device 6 in failure restores, the content of recording of the sub-file 9 is this time given to a master file 8. A terminal device 11 keeps the correspondence with the device 6 effectively at the present system processing mode and that with the spare system processor 7 is made effective at the spare system processing mode.
JP55104605A 1980-07-30 1980-07-30 How to restore a duplex system Expired JPS5836378B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55104605A JPS5836378B2 (en) 1980-07-30 1980-07-30 How to restore a duplex system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55104605A JPS5836378B2 (en) 1980-07-30 1980-07-30 How to restore a duplex system

Publications (2)

Publication Number Publication Date
JPS5730069A true JPS5730069A (en) 1982-02-18
JPS5836378B2 JPS5836378B2 (en) 1983-08-09

Family

ID=14385046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55104605A Expired JPS5836378B2 (en) 1980-07-30 1980-07-30 How to restore a duplex system

Country Status (1)

Country Link
JP (1) JPS5836378B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236137A (en) * 1987-03-24 1988-10-03 Toyota Motor Corp Duplex computer
JPH0695943A (en) * 1992-05-22 1994-04-08 Nec Corp Computer center backup system
JPH08254047A (en) * 1994-12-27 1996-10-01 Pitney Bowes Inc Equipment and method of controlling trouble permission key

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183978A (en) * 1975-01-20 1976-07-22 Hitachi Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183978A (en) * 1975-01-20 1976-07-22 Hitachi Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236137A (en) * 1987-03-24 1988-10-03 Toyota Motor Corp Duplex computer
JPH0695943A (en) * 1992-05-22 1994-04-08 Nec Corp Computer center backup system
JPH08254047A (en) * 1994-12-27 1996-10-01 Pitney Bowes Inc Equipment and method of controlling trouble permission key

Also Published As

Publication number Publication date
JPS5836378B2 (en) 1983-08-09

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