| 摘要 |
A plurality of virtual disks that emulate disk devices and a controller for controlling data access commands from a host are provided. The controller reserves a disk space on one or more disk devices with respect to a designated virtual disk among the plurality of virtual disks, reads data to the disk space from a target tape medium constituting a tape medium that corresponds with the designated virtual disk among the plurality of tape media and, when a data access command to the designated virtual disk is received from the host, performs data access to the disk space, not to the target tape medium 132.
|
