As a storage apparatus, for example, a device (e.g., a disk array device) comprising a number of physical storage devices (e.g., HDDs (Hard Disk Drives)) is well known. This type of storage apparatus generally provides a logical volume to a host device. The host device, by transmitting an access requirement (a write requirement or a read requirement) specifying a logical volume, can write and read data to and from the logical volume.
In the Patent Literature 1, the computer described below is disclosed. That is, a logical volume (hereinafter referred to as an internal volume) is created in accordance with the disks in the computer, and the internal volume is provided to an application program. The data written from the application program to the internal volume is transferred to a storage apparatus outside the computer.