Mattingly, Stanger, Malur & Brundidge, P.C.
Snapshot creating method and apparatus
In the storage-based snapshot creation, a block-selection specifying unit provided on a NAS processing unit specifies a block, which becomes necessary for the generation of snapshot data, to a specified-block analyzing unit within a disk apparatus. Moreover, a disk controller generates the snapshot data on the block specified as the snapshot target, while making an inquiry to the specified-block analyzing unit. This makes it possible to create the snapshot in a storage-capacity reduced manner, and to specify the snapshot creation in a partition, file, or directory unit.
Hitachi, Ltd.
Y G G Y G
Y10S G06F G06F Y10S G06F
additional inventional additional additional additional
Takayoshi Junichi Koji Takahiro Yutaka
Iitsuka Hara Sonoda Nakano Takata