Storage system and data replication method that refuses one or more requests for changing the first logical configuration information until the first storage apparatus and second storage apparatus are synchronized
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United States of America Patent
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Oct 9, 2012
Grant Date -
Jan 3, 2008
app pub date -
Aug 28, 2006
filing date -
Jun 29, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A storage system has two storage apparatuses. Those storage apparatuses include a logical configuration information of a data storage area, an identification unit that identifies one or more requests for changing the logical configuration information from among one or more requests sent from the host system and a transmission unit. When the identification unit identifies to change data, a first storage apparatus updates its own configuration information and the transmission unit sends each of the one or more requests for changing the first logical configuration information to a second storage apparatus. When the second storage apparatus receives the requests, the second storage apparatus updates its own logical configuration information based on the one or more requests for changing.
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