Patent ID: 6735646
Filing Date: 2004-05-11
Classification: G06F,H04L,Y02D

Abstract:
A computer system comprising unit computer systems each having, as a unit, a construction comprising a host computer, a channel interface part having one or more processors for controlling the access of the host computer, a magnetic disk device having a logical volume, a disk interface part having one or more processors for controlling the access of the magnetic disk device, a cache memory part for storing data written/read between said host computer and said magnetic disk device, and a mutual connecting network having a function for interconnecting said channel interface part, said disk interface part, and said cache memory part, the unit computer systems being connected by a common mutual connecting network connecting through said mutual connecting network,the system computer having in its interior: means for monitoring an access status of said unit computer system by a logical path from the host computer through said common mutual connecting network to said logical volume of the magnetic disk device; and means for summing up the access statuses to display to a supervise processor or notify a system manager a result of summing up access statuses and a message of recommending movement of said logical volume of the magnetic disk device monitored when the result of summing up access statuses satisfies a predetermined condition for a predetermined period or timing.