Staas and Halsey LLP
Apparatus and method to reduce a response time for writing data to redundant storage devices by detecting completion of data-writing to at least one driver before elapse of a retry-over time
Upon receiving, from application software, a first request for writing data stored in a first storage-region of the application software, an apparatus acquires a second storage-region, and copies the data to the second storage-region. The apparatus transmits, to one of drivers associated with each of redundant storage-devices on which mirroring is to be performed, a second request for writing the copied data to the each redundant storage-device, transmits, to the application software, a response indicating that writing of the data has been successfully performed in a case where a data-writing process for at least one of the redundant storage-devices is completed when a predetermined time has elapsed after the second request is transmitted to the drivers and before a retry-over time at which retry of the data-writing process is performed predetermined times, and excludes, from the redundant storage-devices, a storage-device for which the data-writing process is not completed.
FUJITSU LIMITED
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inventional additional inventional additional inventional inventional
Norihito Norichika
Kato Imamura