Disk control system and control method of disk control system
First Claim
1. A disk array device, comprising:
- a plurality of disk drives; and
a controller for controlling a data read or write command sent from a host computer with respect to a plurality of logical units corresponding to the plurality of disk drives, wherein the controller, when receiving from the host computer a first write command with respect to a first logical unit of the plurality of logical units, assigns to the first logical unit a first storage region having available storage capacity greater than the amount of data associated with the first write command.
0 Assignments
0 Petitions
Accused Products
Abstract
In order to assign logical devices efficiently to logical units, a disk control system that receives a process command for writing or reading of data from an information processing device, and performs a write or read process of data with respect to a logical device corresponding to a logical unit specified by that process command, includes means for managing logical devices, which are logical storage regions that have been set in a storage region provided by a disk drive, means for storing a correspondence between logical units, which are storage regions that have been set logically, and the logical devices, and means for assigning, when a process command has been received for a logical unit to which no logical device has been assigned, a logical device to that logical unit and performing processing with regard to that logical device.
-
Citations
16 Claims
-
1. A disk array device, comprising:
-
a plurality of disk drives; and
a controller for controlling a data read or write command sent from a host computer with respect to a plurality of logical units corresponding to the plurality of disk drives, wherein the controller, when receiving from the host computer a first write command with respect to a first logical unit of the plurality of logical units, assigns to the first logical unit a first storage region having available storage capacity greater than the amount of data associated with the first write command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A control method for a disk array device that includes a plurality of disk drives and a controller for controlling a data read or write command sent from a host computer with respect to a plurality of logical units corresponding to the plurality of disk drives, the control method comprising a step of:
when receiving from the host computer a first write command with respect to a first logical unit of the plurality of logical units, assigning to the first logical unit a first storage region having available storage capacity greater than the amount of data associated with the first write command. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
Specification