COMPUTER SYSTEM FOR BACKING UP DATA

摘要

It is provided a computer system, comprising a server and first and second storage systems. The first storage system stores deduplicated data sharing at least a part of data with other data, shared data shared by a plurality of pieces of the deduplicated data, and first type data representing a type of the stored data including the deduplicated data and the shared data. The deduplicated data is associated with the shared data by a pointer to the shared data, and includes differential data indicating a difference from the shared data. The server creates second type data representing a type of the data stored in the second storage system from the first type data. The second storage system stores the shared data associated with the deduplicate data at a reading position before a position at which the deduplicated data is read in sequential reading and stores the second type data.

主权项

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.