| 摘要 |
<p>In one aspect, the present invention allows continuation of business processing without delay in accordance with redundancy technology in operation so as to increase availability for work processing. When an instruction unit (18) of an information processing device (10) performs a request for I/O with respect to storage devices (24 and 26) that have been made redundant by redundancy software, a monitoring unit (20) starts monitoring. The monitoring unit (20), when there is no response within a timeout time period, requests verification of state of redundancy from a management unit (12). The management unit (12) references a table (16) and queries the redundancy software on the state of the redundancy, and returns a state of redundancy indicating whether a timeout is allowable to the monitoring unit (20). The monitoring unit (20) performs processing according to whether a timeout is allowable. Therefore, it is possible to suppress occurrence of response delay using redundant storage devices, and even if a response delay occurs in I/O, it is possible to shorten response time and to increase availability of the device.</p> |
