| 摘要 |
Disclosed herewith is a disk array system configured by a plurality of disk array controllers and another disk array apparatus that are operated as an integrated storage system while the system is prevented from degradation of the performance. The disk array controller is provided with a channel interface unit, a disk interface unit, a cache memory unit, a shared memory unit, a shared memory interconnection network for connecting a plurality of disk array control units to each another, and an inter-unit CM-SW for connecting a plurality of disk array control units to each another. The shared memory unit includes another disk array apparatus volume information collection unit for retaining volume information of another disk array apparatus while the inter-unit CM-SW includes a protocol translation interface.
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