Patent ID: 9569311
Date: 2017-02-14
CPC Classifications: G06F

Claim:
1. A computer system for backing up data, comprising: a server for providing data to a client computer; a first storage system for storing the data to be provided to the client computer; and a second storage system for backing up the data stored in the first storage system, wherein the first storage system stores deduplicated data, shared data and regular data which is not deduplicated; wherein the second storage system performs sequential accessing, and such sequential accessing being performed faster than random accessing; wherein the deduplicated data includes a first header and a first body, the first header includes a first type data representing that the data is deduplicated data and reference information associating the deduplicated data to the shared data, the first body includes differential data indicating a difference from the shared data; wherein the shared data includes a second header and a second body, the second header includes a second type data representing that the data is the shared data, the second body includes the shared data which is shared by a plurality of portions of the deduplicated data; wherein the server executes to backup deduplicated data from the first storage system to the second storage system after the shared data associated with the deduplicated data is backed up from the first storage system to the second storage system such that the shared data is positioned sequentially prior to the deduplicated data associated with the shared data; wherein the server executes to restore the backup deduplicated data from the second storage system after the backup shared data associated with the backup deduplicated data is restored; wherein the server determines a file type of a file to be backed up; and wherein the server executes to backup the regular data from the first storage system to the second storage system after the shared data is backed up from the first storage system to the second storage system.