JPS5557959A - On-line recovery control system - Google Patents
On-line recovery control systemInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6310248U (en) * | 1986-07-09 | 1988-01-23 | ||
JPH0158748U (en) * | 1987-10-08 | 1989-04-12 |
-
1978
- 1978-10-25 JP JP53131308A patent/JPS5856142B2/en not_active Expired
Cited By (3)
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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