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. 20, 2012
Filed:
Dec. 18, 2009
Helen S. Raizen, Jamaica Plain, MA (US);
Michael E. Bappe, Loveland, CO (US);
Agarkov Vadim Nikolaevich, Saint Petersburg, RU;
William Carl Biester, Danville, CA (US);
Richard Ruef, Livermore, CA (US);
Karl M. Owen, Chapel Hill, NC (US);
Helen S. Raizen, Jamaica Plain, MA (US);
Michael E. Bappe, Loveland, CO (US);
Agarkov Vadim Nikolaevich, Saint Petersburg, RU;
William Carl Biester, Danville, CA (US);
Richard Ruef, Livermore, CA (US);
Karl M. Owen, Chapel Hill, NC (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A system configured to optimize access to stored chunks of data is provided. The system comprises a vLUN layer, a mapped LUN layer, and a mapping layer disposed between the vLUN and the mapped LUN. The vLUN provides a plurality of logical chunk addresses (LCAs) and the mapped LUN provides a plurality of physical chunk addresses (PCAs), where each LCA or PCA stores a respective chunk of data. The mapping layer defines a layout of the mapped LUN that facilitates efficient read and write access to the mapped LUN.