JPS6441920A - System for updating virtual disk device - Google Patents
System for updating virtual disk deviceInfo
- Publication number
- JPS6441920A JPS6441920A JP62197621A JP19762187A JPS6441920A JP S6441920 A JPS6441920 A JP S6441920A JP 62197621 A JP62197621 A JP 62197621A JP 19762187 A JP19762187 A JP 19762187A JP S6441920 A JPS6441920 A JP S6441920A
- Authority
- JP
- Japan
- Prior art keywords
- track
- updating
- plural
- reading means
- image reading
- 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
Landscapes
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE:To speed up a rolling-out processing by providing a means capable of processing integrally plural track images. CONSTITUTION:The system for updating a virtual disk device is constituted of a writing track number deciding means 11, plural track image reading means 12, plural tracking image updating and rewriting means 13, plural track buffers 14, a track image reading means 21, a track image updating and rewriting means 22, a channel program completion deciding means 23 and a buffer 24. The writing track number deciding means 11 receives the updating request from a virtual computer and discriminates whether or not the updating is over plural tracks. When the updating is a single track, the control is transferred to a track reading means 21 and when the updating is not a single track, the control is transferred to plural track image reading means 12. Thus, even when the data to be updated exist over plural tracks, an updating processing performance cannot be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197621A JPS6441920A (en) | 1987-08-07 | 1987-08-07 | System for updating virtual disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197621A JPS6441920A (en) | 1987-08-07 | 1987-08-07 | System for updating virtual disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6441920A true JPS6441920A (en) | 1989-02-14 |
Family
ID=16377526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62197621A Pending JPS6441920A (en) | 1987-08-07 | 1987-08-07 | System for updating virtual disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6441920A (en) |
-
1987
- 1987-08-07 JP JP62197621A patent/JPS6441920A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0990988A3 (en) | Storage control unit and method for handling data storage system | |
TW335481B (en) | CD-ROM play device and the control method | |
TW332284B (en) | Method and apparatus for controlling access to a recording disk | |
EP0059799A3 (en) | Data processor systems | |
EP0933691A3 (en) | Providing additional addressable space on a disk for use with a virtual data storage subsystem | |
EP0167093A3 (en) | Multiple system disk | |
EP0391517A3 (en) | Method and apparatus for ordering and queueing multiple memory access requests | |
JPS6433770A (en) | Disk controller | |
SE8007292L (en) | SET AND DEVICE FOR STORING DATA | |
US5617380A (en) | Apparatus and method for drive management for multi-pass storage devices | |
JPS6441920A (en) | System for updating virtual disk device | |
US6640269B1 (en) | Method and apparatus for assisting communication of information between two processes | |
EP0320756A3 (en) | System for scanning documents without loss of image data | |
JPS55159263A (en) | Read-in and write-in system for magnetic disc | |
JPS6466756A (en) | Roll-back buffer control system | |
JPS5638652A (en) | Recording and control system of periodic data | |
JPS57767A (en) | Controlling method for floppy disk | |
JPS6482240A (en) | Information processing system | |
JPS6432352A (en) | Control system for cache memory | |
JPS6446126A (en) | Floppy disk device | |
JPS57146359A (en) | Method and apparatus for data transfer | |
JPS6433768A (en) | Disk releasing system at the time of generating trouble | |
JPS5798167A (en) | Data copying system | |
JPS57201950A (en) | Double recording magnetic disk system | |
JPS6421680A (en) | Image data processor |