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. 03, 2012
Filed:
Oct. 29, 2008
Aharon Blitzer, Shoham, IL;
Aviram Katz, Kiryat Onno, IL;
Roy Dahan, Ashdod, IL;
Amit Lieberman, Raanana, IL;
Maayan Maltz, Ein Hashofet, IL;
Aharon Blitzer, Shoham, IL;
Aviram Katz, Kiryat Onno, IL;
Roy Dahan, Ashdod, IL;
Amit Lieberman, Raanana, IL;
Maayan Maltz, Ein Hashofet, IL;
EMC Corporation, Hopkinton, MA (US);
Abstract
Providing a multiple protection snapshot copy of a logical device includes creating the snapshot copy of the logical device, where, in response to a write to a section of the logical device, data is copied to a first alternative storage area prior to the write and, following creating the snapshot copy, pointing portions of the snapshot copy to a second alternative storage area having data that is a copy of the logical device, where data corresponding to the snapshot copy is stored in one of: the first alternative storage area and the second alternative storage area. Providing a multiple protection snapshot copy of a logical device may also include, prior to pointing portions of the snapshot copy to the second alternative storage area and after creating the snapshot copy, copying data from the logical device to the second alternative storage area.