Patent ID: 7398420
Filing Date: 2008-07-08
Classification: G06F

Abstract:
1. A storage subsystem, comprising: a plurality of storage devices including first and second storage devices; a connection device for connecting said storage subsystem with an external device; and a control unit, wherein said plurality of storage devices have a function to store data which has been received from an external device via said connection device, wherein said external device is capable of issuing a first command for the storage subsystem to perform a data copy process from the first storage device to the second storage device and a data storage process to said first storage device and is also capable of issuing a second command to perform the data storage process to the first storage device without performing the data copy operation, said control unit has a function to process a command for accessing the data which has been received via said connection device and stored in said plurality of storage devices, and said command processed by said control unit includes the first command and the second command such that the data copy process and the second command such that the data copy process and the data storage process can be performed independently of one another.