Patent ID: 8560631
Filing Date: 2013-10-15
Classification: H04L

Abstract:
1. A storage system coupled to a computer via a network, the storage system comprising: a plurality of storage subsystems including a first storage subsystem and a second storage subsystem; wherein the first storage subsystem includes a plurality of first storage devices and a first controller providing one or more first logical volumes and one or more second logical volumes, which are configured on the first storage devices of the computer; wherein the second storage subsystem includes a plurality of second storage devices and a second controller; wherein a first IP address corresponds to the one or more first logical volumes and a second IP address corresponds to the one or more second logical volumes; wherein, when the first controller migrates the one or more first logical volumes from the first storage subsystem to the second storage subsystem, the first controller transfers information regarding the first IP address with first data stored in the one or more first logical volumes to the second controller of the second storage subsystem, after which the second controller provides the one or more migrated first logical volumes, which are configured on the second storage devices, with the first IP address to the computer.