Patent ID: 7032041

Claim:
An information processing system comprising a storage equipment which includes a logical unit logically assigned to physical devices and an information processing apparatus which sends data input/output requests to said storage equipment, wherein the data input/output requests are transferred through logical paths serving as communication paths to said logical unit, wherein a cache memory is provided to prefer etch and store both data in a location to be accessed by one of said data input/output requests and data in locations following said location within said physical devices, said information processing apparatus comprising a path selection management section which manages configurations of a plurality of blocks into which said logical unit is divided, an I/O request allocation section which allocates data input/output requests to be transmitted to said storage equipment to said logical paths, and I/O processing units which transmit said data input/output requests through said logical paths, according to the allocation determined by said I/O request allocation section, pursuant to an established protocol, wherein said path selection management section assigns at least one of said logical paths to one of said blocks, and said I/O request allocation section allocates data input/output requests that specify consecutive locations on the logical unit to the same logical path assigned by said path selection management section when data input/output requests that specify consecutive locations on the logical unit are received.