Patent ID: 6748489
Filing Date: 2004-06-08
Classification: G06F

Abstract:
A volume management method for setting at least a logical volume over a plurality of physical storage devices, said method comprising the steps of:receiving a volume creation request specifying a requested storage capacity and requested average performance; forming a judgment as to whether or not there exists an unoccupied area satisfying said requested storage capacity throughout said storage devices; forming a judgment as to whether or not all logical volumes, which include present logical volumes that are already set and each sharing any of said storage devices with a logical volume to be created and said logical volume to be created, each satisfy its requested average performance by referring to information of requested average performance on a storage means for each of said present logical volumes if said unoccupied area satisfying a requested storage capacity is determined to exist; and setting said logical volume to be created if said all logical volumes each satisfy said requested average performance.