Patent ID: 7925832
Filing Date: 2011-04-12
Classification: G06F

Abstract:
1. A computer configured to be coupled to a storage system comprising: a memory storing pair management information which indicates a copy pair including a first volume and a second volume in the storage system; and a processor configured to send a copy command to copy between the first volume and the second volume, wherein the memory stores a first driver which relates to the first volume and a second driver which relates to the second volume, the first driver set as an I/O issuing driver and the second driver set as a driver which communicates with an application, wherein when the second driver receives an I/O request, the second driver sends the I/O request to the first driver, and the first driver issues the I/O request to the first volume, and wherein when the first driver receives a response to the I/O request, the first driver sends the response to the second driver, and the second driver sends the response to the application.