Power efficient data storage with data de-duplication

Details Power efficient data storage with data de-duplication Power efficient data storage with data de-duplication

2011-01-11

2011-01-11

Butler, Dennis M (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S320000, C711S162000

Reexamination Certificate

active

07870409

ABSTRACT:
A storage system includes a first de-duplication scope comprising a first volume, a first table of hash values corresponding to first chunks of data stored on the first volume, and a first table 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 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.

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