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:
Dec. 07, 2010
Filed:
Sep. 28, 2006
David French, Grafton, MA (US);
Douglas Sullivan, Hopkinton, MA (US);
H. Austin Spang, Iv, Hopkinton, MA (US);
Bill Buckley, Brighton, MA (US);
Matt Yellen, Worcester, MA (US);
David French, Grafton, MA (US);
Douglas Sullivan, Hopkinton, MA (US);
H. Austin Spang, IV, Hopkinton, MA (US);
Bill Buckley, Brighton, MA (US);
Matt Yellen, Worcester, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A technique responds to a storage processor failure. The technique involves performing write-back caching operations using a cache of a first storage processor, and mirroring data from the cache of the first storage processor to a cache of a second storage processor. The technique further involves, after of a failure of the second storage processor in which the second storage processor becomes unavailable, continuing to perform write-back caching operations using the cache of the first storage processor while the second storage processor remains unavailable. A cache controller is capable of being modified so that any write data in the cache of the first storage processor persists if the first storage processor encounters a failure thus preventing loss of the cached write data.