Storage system creating a recovery request enabling execution of a recovery and comprising a switch that detects recovery request point events
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United States of America Patent
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Dec 4, 2012
Grant Date -
Nov 5, 2009
app pub date -
Jul 10, 2009
filing date -
Jan 31, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A switch connected to a network system including a computer and a storage apparatus: controlling read/write request from the computer to the storage apparatus and controlling to store journal data in the storage apparatus; wherein the storage apparatus includes a first storage area for storing data to be used by the computer and a second storage area for storing journal data including write data and first update log information corresponding to the write data when there is a write request from the computer for writing data in the first storage area; wherein when the switch detects an event of status change related to the network system, the switch marks a first point of time corresponding to the event as a recovery request point, and creates second update log information corresponding to the recovery request point.
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