Patent ID: 9075530
Filing Date: 2015-07-07
Classification: G06F

Abstract:
1. A storage system, comprising: a plurality of disk control devices having a plurality of physical disks connected via a network to a management server managing the plurality of physical disks allocated to a virtual machine, wherein the plurality of disk control devices: manage a specified storage area provided by the plurality of physical disks as one or more logical volumes, and map the one or more logical volumes complying with a storage policy or storage policies, which include capacity information about the virtual machine and are preset to construct the virtual machine, to a virtual volume or volumes provided to the virtual machine in response to a request from the management server, wherein when one of the storage policies is selected, the management server constructs the virtual machine by associating the virtual volume or volumes, which comply with the storage policy, with the virtual machine, wherein when the storage policy includes information indicating that a remote copy is to be performed between a local site, which is a copy source of the storage system, and a remote site which is a copy destination of the storage system, the plurality of disk control devices map a first specified number of logical volumes among the plurality of logical volumes, to a virtual volume at the local site and map a second specified number of logical volumes to a virtual volume at the remote site according to a remote copy type included in the storage policy, and wherein the second specified number of the logical volumes mapped to the virtual volume at the remote site is less than the first specified number of the logical volumes mapped to the virtual volume at the local site.