Electrical computers and digital processing systems: memory – Address formation – Address mapping
Reexamination Certificate
2006-12-26
2006-12-26
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Address formation
Address mapping
C711S114000
Reexamination Certificate
active
07155595
ABSTRACT:
A storage device controlling apparatus includes: a plurality of channel controllers having a circuit board on which are formed a file access processing section receiving requests to input and output data in files as units from an information processing apparatus and an I/O processor outputting I/O requests corresponding to the requests to input and output data to a storage device; and a disk controller executing input and output of data into and from the storage device in response to the I/O requests sent from the I/O processors. In the storage device controlling apparatus, the disk controller performs a replication management processing whereby data is also written into a second logical volume to store a copy of the data in the second logical volume, when the data is written into a first logical volume.
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Nakayama Shin-ichi
Ogasawara Hiroshi
Saika Nobuyuki
Shikawa Jinichi
Takata Yutaka
Hitachi , Ltd.
Iwashko Lev
Kim Matthew
Townsend and Townsend / and Crew LLP
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