JPS5557959A - On-line recovery control system - Google Patents

On-line recovery control system

Info

Publication number
JPS5557959A
JPS5557959A JP13130878A JP13130878A JPS5557959A JP S5557959 A JPS5557959 A JP S5557959A JP 13130878 A JP13130878 A JP 13130878A JP 13130878 A JP13130878 A JP 13130878A JP S5557959 A JPS5557959 A JP S5557959A
Authority
JP
Japan
Prior art keywords
stored
magnetic tape
data set
data
log data
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
JP13130878A
Other languages
Japanese (ja)
Other versions
JPS5856142B2 (en
Inventor
Masao Hoshino
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 JP53131308A priority Critical patent/JPS5856142B2/en
Publication of JPS5557959A publication Critical patent/JPS5557959A/en
Publication of JPS5856142B2 publication Critical patent/JPS5856142B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE: To shorten the time needed for the recovery of a data set, by dumping the data set at any time in on-line execution.
CONSTITUTION: Log data are sequentially stored in magnetic tape units 21 and 22, a method is provided which is stored with discrimination information discrimimating each log data, and when contents of magnetic disks 8 and 9 are stored in magnetic tape unit 18 stored with all dumped data, discrimination information at that time is stored in an area of control information memory 19. All dumped data written in magnetic tape unit 18 after the occurrence of the fault, and log data stored from a log data set position indicated by positiok information written in the control information memory part of magnetic tape unit 18 to that right before the occurrence of the fault are used to restore the data set by using a fixed recovery program.
COPYRIGHT: (C)1980,JPO&Japio
JP53131308A 1978-10-25 1978-10-25 Online recovery control method Expired JPS5856142B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53131308A JPS5856142B2 (en) 1978-10-25 1978-10-25 Online recovery control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53131308A JPS5856142B2 (en) 1978-10-25 1978-10-25 Online recovery control method

Publications (2)

Publication Number Publication Date
JPS5557959A true JPS5557959A (en) 1980-04-30
JPS5856142B2 JPS5856142B2 (en) 1983-12-13

Family

ID=15054912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53131308A Expired JPS5856142B2 (en) 1978-10-25 1978-10-25 Online recovery control method

Country Status (1)

Country Link
JP (1) JPS5856142B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59125460A (en) * 1982-12-30 1984-07-19 Fujitsu Ltd Saving and restoring system of file
JPS62257540A (en) * 1986-05-01 1987-11-10 Hitachi Ltd System for restoring constitution of data processing system
JPH0235530A (en) * 1988-07-25 1990-02-06 Nec Corp Total reprocessing system for on-line service

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6310248U (en) * 1986-07-09 1988-01-23
JPH0158748U (en) * 1987-10-08 1989-04-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59125460A (en) * 1982-12-30 1984-07-19 Fujitsu Ltd Saving and restoring system of file
JPS62257540A (en) * 1986-05-01 1987-11-10 Hitachi Ltd System for restoring constitution of data processing system
JPH0235530A (en) * 1988-07-25 1990-02-06 Nec Corp Total reprocessing system for on-line service

Also Published As

Publication number Publication date
JPS5856142B2 (en) 1983-12-13

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