Methods for controlling storage devices controlling apparatuses
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United States of America Patent
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-
Apr 10, 2007
Grant Date -
Aug 5, 2004
app pub date -
Aug 26, 2003
filing date -
Jan 31, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A storage device controller including: channel control portions each including a circuit board on which a file access processing portion for receiving file-by-file data input/output requests sent from information processors and an I/O processor for outputting I/O requests corresponding to the data input/output requests to storage devices are formed, the channel control portions being classified into groups for the sake of fail-over; and a device for storing data updated by each of the channel control portions and handed over at the time of the fail-over in a shared volume which is a storage region logically set on physical storage regions provided by the storage devices and which can be accessed commonly by any other channel control portion belonging to the same group as the channel control portion updating the data.
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