VIRTUAL LIBRARY DEVICE, VIRTUAL LIBRARY SYSTEM AND METHOD FOR COPYING LOGICAL VOLUME OF VIRTUAL LIBRARY DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a virtual library device that avoids concentration of accesses to a specific disk volume of a plurality of disk volumes. PSOLUTION: The virtual library device comprises: a plurality of disk volumes constituting a cache disk; a specification means specifying a logical volume to be copied; a monitoring means monitoring accesses to the disk volumes; a selection means selecting a disk volume with a minimum access load on the basis of the monitoring resu a first copying means copying the specified logical volume from a first recording medium of the library device to the selected disk volume; and a second copying means copying the copied logical volume from the disk volume to a second recording medium of the library device. PCOPYRIGHT: (C)2009,JPO&INPIT