| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk array control device in which even when an abnormality occurs at a storage device, smoothness of a response to an input/output request from the outside can be attained, and reduction of input/output throughput of an entire device can be suppressed.SOLUTION: A control device body 100A executes input/output control of data to one logical storage device 30 that is logical and constituted by a plurality of storage units 32a to 32n by means of an external instruction. The control device body 100A includes: main control means 14 for controlling the entire device; storage control means 22 for executing input/output instruction to a plurality of storage devices; storage device control means 22 for executing input/output instruction to the plurality of storage devices; and writing control means 12 that operates when the input/output instruction is a writing request, and executes, via the storage device control means 22, the writing request. There are further provided: record holding means for temporarily storing a writing request which is generated during restoration processing executed after occurrence of an abnormality in any of the storage devices, when an abnormality occurs in any of the storage devices, and delay writing control means 16 for performing delay writing of data associated with the writing request to the one storage device after restoration processing for the one storage device. |
