Method for snooping raid 1 read transactions by a storage device
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United States of America Patent
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Jan 17, 2006
Issued Date -
N/A
app pub date -
Jul 31, 2002
filing date -
Jul 31, 2002
priority date (Note) -
Expired
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Abstract
To implement a RAID 1 transaction, an initiator sends a single command, i.e., either a single read command, or a single write command, over a common I/O bus to a primary target device. A mirror target device snoops the common I/O bus and upon detecting the single command directed to the primary target device, effectively performs in the same manner as if the command had been directed to the mirror target device. Hence, a single command is used to effectuate a mirrored transaction.
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