JPS6441920A - System for updating virtual disk device - Google Patents

System for updating virtual disk device

Info

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
Application number
JP62197621A
Other languages
Japanese (ja)
Inventor
Osamu Kuroiwa
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62197621A priority Critical patent/JPS6441920A/en
Publication of JPS6441920A publication Critical patent/JPS6441920A/en
Pending legal-status Critical Current

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.
JP62197621A 1987-08-07 1987-08-07 System for updating virtual disk device Pending JPS6441920A (en)

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)

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