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:
Apr. 02, 2002
Filed:
Jun. 30, 1998
Applicant:
Inventors:
Edgar J. St. Pierre, Fall River, MA (US);
Alton Gill, Harvard, MA (US);
Assignee:
EMC Corporation, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/216 ;
U.S. Cl.
CPC ...
G06F 1/216 ;
Abstract
Method and apparatus for backup in restoring data on a computer system are disclosed. Backups may include a differential backup. In a differential backup, only some (but not all) segments of data in a primary copy are backed up. The segments may correspond to physical segments of storage in a storage system, rather than logical level segments of storage. The method and apparatus may include constructing a complete copy of a backed up element from an earlier fill backup and a subsequent differential backup.