Search International and National Patent Collections
|1. (WO2017149592) STORAGE DEVICE|
A storage device according to one aspect of the present invention comprises one or more memory devices which are for storing write data for which a write request has been made from a host computer, and a storage controller which provides one or more volumes to the host computer. For each section within the volume, the time at which the most recent write request has been accepted from the host computer is managed. Upon detecting the section for which the write request has not been accepted for a period greater than or equal to a prescribed period from the time at which the latest write request has been accepted, the storage controller carries out a deduplication process.