| 摘要 |
PURPOSE:To set logical device constitution without considering physical size and to easily set the logical device constitution. CONSTITUTION:The collective storage device 108 which consists of plural physical storage devices 108 and is read and written from a host device is equipped with a physical device constitution information table 110 which contains constitution information on the physical storage devices 108, a logical device constitution information table ill which contains logical device constitution information when the physical storage devices 108 are divided into plural logical devices, and division specifying means 102 and 103 which perform at least one of (n)- equal-division specification for equally dividing the total storage capacity of the physical storage devices 108 into (n) logical devices, division distribution ratio specification for performing division specification by specifying the number of divisions and the distribution ratio of the respective logical devices, and physical border division specification for specifying division positions in physical storage device units according to a command from the host device. |
