JPS54134525A - Error recovery control system for storge medium - Google Patents
Error recovery control system for storge mediumInfo
- Publication number
- JPS54134525A JPS54134525A JP4244378A JP4244378A JPS54134525A JP S54134525 A JPS54134525 A JP S54134525A JP 4244378 A JP4244378 A JP 4244378A JP 4244378 A JP4244378 A JP 4244378A JP S54134525 A JPS54134525 A JP S54134525A
- Authority
- JP
- Japan
- Prior art keywords
- storage medium
- records
- auxiliary storage
- cell
- central processing
- 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
Links
Abstract
PURPOSE: To reduce the load of a central processing unit, a main memory and a channel by using a specific work memory on an auxiliary storage medium controller to perform the control by which the record destruction dependent upon the process erroneous processing is prevented.
CONSTITUTION: When a write instruction is issued from a central processing unit to write records, which were updated by a process, to original positions on auxiliary storage medium (source cell) 31 in respect to records which are read from auxiliary storage medium 31, where records are stored according to the request of the process, into a main memory, auxiliary storage medium controller 30 which accepted this instruction interprets the instruction independently of the central processing uint and does not write records onto source cell 31 but writes records onto updated record saving storage medium (work cell) 32 which can be controlled by the medium controller. In case of the abnormal completion of the process, the work cell is released; and in case of the normal completion, the record group is read out from the work cell and is written to original positions on the source cell, and the work cell is released.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4244378A JPS54134525A (en) | 1978-04-10 | 1978-04-10 | Error recovery control system for storge medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4244378A JPS54134525A (en) | 1978-04-10 | 1978-04-10 | Error recovery control system for storge medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54134525A true JPS54134525A (en) | 1979-10-19 |
Family
ID=12636210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4244378A Pending JPS54134525A (en) | 1978-04-10 | 1978-04-10 | Error recovery control system for storge medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54134525A (en) |
-
1978
- 1978-04-10 JP JP4244378A patent/JPS54134525A/en active Pending
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