Disk array control device

摘要

A disk array control device (1) of the present invention has a plurality of channel IF units (11), a plurality of disk IF units (12), a cache memory unit (14), and a shared memory unit (15), wherein the connection form between said plurality of channel IF units (11) and plurality of disk IF units (12) and the cache memory unit (15) is different from the connection form between the plurality of channel IF units (11) and plurality of disk IF units (12) and the shared memory unit (15). The most desirable mode carrying out the invention is that the plurality of channel IF units (11) and plurality of disk IF units (12) are connected via a selector (13) to the cache memory unit (15) whereas the plurality of channel IF units (11) and plurality of disk IF units (12) are directly connected to the shared memory unit (15) with no selectors provided therebetween.