May 30, 2006

Disclosed is a disk array system that can be expanded effectively in scale by increasing the number of input/output channels and disk adapters and improved in such performance as the number of input/output operations per second, data transfer rate. The disk array system is provided with input/output channels to be coupled to a host computer, cache memories coupled to each of input/output channels respectively and used to store input/output data temporarily, disk drives, disk adapters coupled to the disk drives, and network switches used to couple the input/output channels to the disk adapters.

14

May 30, 2006

10/219,768

August 16, 2002

711/114   711/113

G06F   12/00   (20060101)  

May 24, 2002 [JP] P2002-150045

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7392341 - Disk array system and cache control method - Owned by Hitachi, Ltd. (Tokyo,JP) Disclosed is a disk array system that can be expanded effectively in scale by increasing the number of input/output channels and disk adapters and improved in such performance as the number of input/output operations per second, data transfer rate. The disk array system is provided with input/output channels to be coupled to a host computer, cache memories coupled to each of input/output channels respectively and used to store input/output data temporarily, disk drives, disk adapters coupled to the disk drives, and network switches used to couple the input/output channels to the disk adapters.