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. 18, 2003
Filed:
Jul. 05, 2000
Applicant:
Inventor:
Ishay Kedem, Brookline, MA (US);
Assignee:
EMC Corporation, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/05 ; G06F 1/200 ;
U.S. Cl.
CPC ...
H02H 3/05 ; G06F 1/200 ;
Abstract
Method and apparatus are disclosed for resolving data coherence problems (or mismatched data caused by a failure to update data) in a storage system that includes redundant information. The data may be stored as CKD records or fixed size blocks. The method and apparatus may identify data coherence problems by comparing fields for which the correct value is known in advance, by comparing fields between more than one copy of corresponding data units and through other disclosed techniques.