作者: Naoto Matsunami , Ikuya Yagisawa , Yoichi Mizuno
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摘要: A storage system which comprises a disk controller and device having original volumes for backup pool data. It incorporates differential management program checks whether the are updated or not; allocates area to data; performance manages of each volume; control performs total control. method by recovery within user-specified object time is possible selected according restore calculated size changed blocks after acquisition as counted program.