Patent ID: 7849264
Filing Date: 2010-12-07
Classification: G06F,H04L

Abstract:
1. A storage area management method for a computer system having a storage system, a host computer coupled to the storage system via a network, and a management computer that can access to the storage system and the host computer, wherein the storage system having a first interface coupled to the network, a first processor coupled to the first interface, a first memory coupled to the first processor, and a storage device for storing data read and written by the host computer, wherein the management computer having a second interface coupled to the network, a second processor coupled to the second interface, and a second memory coupled to the second processor, wherein the storage system having a pool area which includes the storage device, wherein the pool area having logical volumes which are created to be provided to the host computer as storage areas where data is read and written by the host computer, and wherein the logical volumes having a predetermined relation and being included in a logical volume group; a copy of the logical volume group being created in a pool area different from the pool area to which the logical volume group belongs, wherein the storage management method comprising the steps of: monitoring, by the second processor, a capacity of the pool area to which the logic volume belongs; sending, by the second processor, a request to the storage system to add to the capacity of the pool area to which the logical volume belongs when an unused capacity of the pool area to which the logical volume belongs reaches a predetermined threshold or lower; sending, by the second processor, a request to the storage system to create a sub-pool area for each of the logical volume groups included in the pool area to which the logical volume belongs when the pool area to which the logical volume belongs includes multiple logical volume groups; sending, by the second processor, a request to the storage system to create the logical volume groups included in the pool area to which the logical volume belongs, respectively for the created sub-pool areas; and sending, by the second processor, a request to the storage system to operate a pool area in which the copy of the one logical volume group included in the pool area is created when the pool area includes one logical volume group.