Method and device for acquiring snapshots and computer system with snapshot acquiring function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 19, 2006
Grant Date -
Aug 25, 2005
app pub date -
May 4, 2004
filing date -
Feb 23, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
To eliminate unnecessary generational management, a device to be snapshot and a snapshot control device capable of controlling snapshot commands are connected to a storage system connected to a server provided with a snapshot operating section. The storage system has a differential data storage area for the purpose of generational management of differential data in the device to be snapshot. A snapshot command control section carries out command processing upon receiving snapshot control command issue requests from the server. A designated snapshot update volume managing section manages the update differential volume for snapshot processing, compares a previously designated update volume and an actual update volume, and implements processing for provisional generational management of the update differential in accordance with the designated update volume. A designated snapshot volume reporting section reports management status and processing results to the server in accordance with management of the update differential volume and generational management.
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