Hitachi, Ltd.

Tetsuhiro Gotou

Yoshihiro Toyohara

Yuusaku Kiyota

Yusaku Kiyota

A computer system comprises: a host computer including a host memory and a plurality of host processors; a storage apparatus; and an interface device coupled to the host computer and the storage apparatus, the interface device including a plurality of communication processors, wherein the host computer is configured to create a first logical partition, which is a destination of dedicated allocation of a first host memory area which is a partial area of the host memory, at least one of the plurality of host processors, and at least one of the plurality of communication processors.

Interface device, and computer system including interface device

A control apparatus, which is configured to control a plurality of processors corresponding to a plurality of storage areas arranged at an interface for accessing the storage areas, comprises: an update unit configured to, in a case a command sequence including each command outputted to one of the storage areas is inputted, update, by each one of the processors, a load applied by a command currently being executed to the storage area corresponding to the processor; a selection unit configured to, for one command of the command sequence, based on a load applied by a command currently executed at the processor updated by the update unit, select a processor out of the processors as an allocation destination of the one command; and an output unit configured to output the one command to the processor selected by the selection unit.

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Tokyo, Japan

Tetsuhiro Gotou