Patent ID: 9304710
Filing Date: 2016-04-05
CPC Classification: G06F

Claim Text:
1. A storage system, comprising: a storage apparatus storing data used by an external apparatus; first and second temporary data storage units temporarily storing data read from the storage apparatus; and a controller, wherein, in the case that data read from the storage apparatus is transferred to the first temporary data storage unit on the basis of an I/O request from the external apparatus, the controller is configured to select one of a first data transfer process and a second data transfer process on the basis of the I/O request, wherein, in the first data transfer process, the storage system is configured to execute data transfer from the storage apparatus to the first temporary data storage unit, and wherein, in the second data transfer process, the storage system is configured to execute data transfer from the storage apparatus to the second temporary data storage unit and data transfer from the second temporary data storage unit to the first temporary data storage unit.