Hitoshi Kakuta

File data multiplexing method and data processing system

Disk array system having adjustable parity group sizes based on storage unit capacities

Disk system and power-on sequence for the same

Array disk subsystem

Disk array system and its control method

Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs

Disk array system, data writing method thereof, and fault recovering method

Disc system for holding data in a form of a plurality of data blocks dispersed in a plurality of disc units connected by a common data bus

Disk array system and method of renewing data thereof

Disk array apparatus and method for dividing and reading/writing partial data across a plurality of drive groups utilizing parallel processing