Disk array device, disk controller, and load balancing method in the disk array system

摘要

PPROBLEM TO BE SOLVED: To increase the degree of freedom of a device structure and equalize processor loads, by separating the function of executing data read and write processing from a host interface and a disk interface. PSOLUTION: In a disk array device including a disk enclosure and a disk control unit, the disk control unit includes a host interface connected to a host computer which accesses the disk array device, a disk interface connected to the disk enclosure, a plurality of processors that execute data read and write processing between the host computer and the disk enclosure, and a switch which connects the host interface and the disk interface, and the plurality of processors, wherein the switch has a function of selecting a processor which executes the data read and write processing. PCOPYRIGHT: (C)2011,JPO&INPIT