Data restoring method and an apparatus using journal data and an identification information

The storage system is coupled to a computer and includes a plurality of physical storages being used to configure a first logical storage and a second logical storage, a control unit receiving a read request and a write request from the computer; and a cache memory storing data which is sent to the...

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Hauptverfasser:	OEDA TAKASHI, YAMAMOTO YASUTOMO, EGUCHI YOSHIAKI, MOGI KAZUHIKO, ARAI KOUJI
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION PHYSICS
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creator	OEDA TAKASHI YAMAMOTO YASUTOMO EGUCHI YOSHIAKI MOGI KAZUHIKO ARAI KOUJI
description	The storage system is coupled to a computer and includes a plurality of physical storages being used to configure a first logical storage and a second logical storage, a control unit receiving a read request and a write request from the computer; and a cache memory storing data which is sent to the computer. The control unit determines whether a request from the computer is a write request or a read request. If it is a read request, the control unit reads data from the cache memory or at least one of the plurality of physical storages based on the read request. If it is a write request, the control unit determines whether destination of the write request is the first logical storage.
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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	Data restoring method and an apparatus using journal data and an identification information
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