SPEICHERSYSTEM MIT DATENWIEDERHERSTELLUNG

The data is automatically recovered to a desired arbitrary point in an external storage without imposing a burden on a host computer. An application on a host computer instructs data recovery control processing of a disk control apparatus to set a recovery opportunity. It is made possible to registe...

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Hauptverfasser: SUISHU, KAZUHITO, TSUBOKI, MASANAO, KAIYA, KEIICHI
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creator SUISHU, KAZUHITO
TSUBOKI, MASANAO
KAIYA, KEIICHI
description The data is automatically recovered to a desired arbitrary point in an external storage without imposing a burden on a host computer. An application on a host computer instructs data recovery control processing of a disk control apparatus to set a recovery opportunity. It is made possible to register arbitrary plural points as recoverable point by setting a recovery flag included in journal data. In the case in which data is recovered due to occurrence of a failure or the like, the application requests a list showing recovery opportunities which have already been set. The application designates a point to which data is recovered on the basis of the recovery opportunity list. The disk control apparatus recovers the data to the designated point on the basis of a backup disk and a journal disk.
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subjects CALCULATING
COMPUTING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
PHYSICS
title SPEICHERSYSTEM MIT DATENWIEDERHERSTELLUNG
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