Patent ID: 8886993

Claim:
A storage sub-system coupled to a host computer, the storage subsystem comprising: a storage device unit having a plurality of storage devices configured to store data from the host computer; and a management unit configured to manage the storage device unit; wherein the management unit comprises at least one computer that is configured to: specify a first slot of a storage device in which failure has occurred; specify a second slot that differs from the specified first slot; and perform a data recovery processing and a data erase processing of the storage device in which the failure has occurred using the first slot and the second slot; and wherein the second slot is a slot determined by the at least one computer of the management unit by sending a load information request to the storage device, acquiring a storage device load information, comparing the storage device load information with a configuration information managed in the storage sub-system, and extracting a slot in an unused status from all slots of the storage subsystem.