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:
Aug. 05, 2014
Filed:
Mar. 15, 2012
Renen Hallak, Tel-Aviv, IL;
Tal Ben Moshe, Kiryat-Ono, IL;
Niko Farhi, Tel-Aviv, IL;
Erez Webman, Petach-Tikva, IL;
Renen Hallak, Tel-Aviv, IL;
Tal Ben Moshe, Kiryat-Ono, IL;
Niko Farhi, Tel-Aviv, IL;
Erez Webman, Petach-Tikva, IL;
EMC Corporation, Hopkinton, MA (US);
Abstract
A disk array memory system comprises: a plurality of disks in a disk array for storage of content data and parity data in stripes, content data in a same stripe sharing parity bits of said parity data, each disk having a spare disk capacity including at least some of a predefined array spare capacity, said array spare capacity providing a dynamic space reserve over said array to permit data recovery following a disk failure event; a cache for caching content data prior to writing to said disk array; and a controller configured to select a stripe currently having a largest spare stripe capacity, for a current write operation of data from said cache, thereby to write all said data of said current write operation on a same stripe, thereby to maximize sharing of parity bits per write operation and minimize separate parity write operations.