| 摘要 |
A storage system (100) includes a first de-duplication scope (300) comprising a first volume (220 - 1), a first table of hash values (800) corresponding to first chunks of data stored on the first volume, and a first table (900) of logical block addresses of where the chunks of data are stored on the first volume. A second de-duplication scope includes similar information for a second volume. The first scope is used for de-duplicating and storing first data from a first data source and the second scope is used for de-duplicating and storing second data from a second data source. First storage mediums (106) that make up the first volume remain powered off while de-duplication and storage of the second data on the second volume takes place, and second storage mediums that make up the second volume remain powered off while de-duplication and storage of the first data takes place, thereby enabling data de-duplication while saving power. |
