The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Mar. 28, 2008
William Whitney, Marlborough, MA (US);
Uday K. Gupta, Westford, MA (US);
Michael B. Evans, Upton, MA (US);
Gerald E. Cotter, Hopkinton, MA (US);
William Whitney, Marlborough, MA (US);
Uday K. Gupta, Westford, MA (US);
Michael B. Evans, Upton, MA (US);
Gerald E. Cotter, Hopkinton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method is used in managing data on data storage systems. Rules are defined for candidate data unit selection. The rules are automatically executed on a primary data storage system to examine data units on the primary data storage system. The rules are applied to the data units. A data unit is identified that matches the rules and the identified data unit is migrated. The identified data unit is copied from the primary storage system to a secondary storage system. The identified data unit on the primary storage system is replaced with metadata. the data storage space in the primary storage system corresponding to the identified data unit is freed up.