Patent ID: 7380061
Filing Date: 2008-05-27
Classification: G06F

Abstract:
1. A management computer for managing, via a management network, capacities of volumes of a storage system, comprising: a network interface arranged to be coupled to the management network; a processor coupled to the network interface; and a memory coupled to the processor; wherein the processor collects from the storage system, via the network interface, capacity information representing the capacities of volumes of the storage system; the processor collects, via the network interface, relationship information which defines relationships between the volumes; the processor sums the capacities of the volumes to obtain a value of a total capacity of the volumes of the storage system; the processor subtracts from the value of the total capacity, a value of the capacity of any real data volume indicated by the relationship information and accessible by addressing a virtual volume related thereto; and the processor outputs the result of the subtraction as an effective total capacity of the volumes of the storage system.