Logical volume copy manner of virtual library device, virtual library system and virtual library device.

摘要

A virtual library apparatus emulates a library apparatus by storing a logical volume on a cache disk. The library apparatus has a first storage medium and a second storage medium. The virtual library apparatus includes a disk volume, a determining unit, a monitor, and a copying unit. The disk volume forms the cache disk. The determining unit determines the logical volume to be copied. The monitor monitors access load to the disk volume and selects the disk volume having the smallest access load on the basis of the monitoring result. The copying unit copies the determined logical volume from the first storage medium to the selected disk volume, and copies the copied logical volume from the disk volume to the second storage medium.