Patent ID: 6799244
Filing Date: 2004-09-28
Classification: G06F

Abstract:
A method for booting a storage system comprising a plurality of storage units for storing data, and a storage control unit interposed between a host computer and the storage units, the storage control unit including a processor for controlling the transfer of data between the host computer and the storage units and including a cache memory for temporarily storing the data, the method comprising the steps of:providing power to the storage system subsequent to a fault to begin recovering from the fault; temporarily suspending processing by the host computer while the storage system is recovering from the fault; recovering from the fault by copying management information in the cache memory of the storage system into a memory in the processor of the storage system, the management information relating to data that is stored in the cache memory at a time prior to occurrence of the fault; and restarting processing by the host computer subsequent to recovering from the fault.