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. 17, 2010
Filed:
Jul. 22, 2005
Richard Urmston, Westborough, MA (US);
Richard Urmston, Westborough, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Storing data is disclosed. All base data is copied from a first storage device to a master set on a second storage device. A request is received to write data to a specified location on the first storage device. An indication is stored in a list that the data at the specified location has changed. At a specified base time and using the stored indication, a replica of the data stored at the specified location as of that time is sent to a remote host associated with the second storage device. The remote host is configured to make and store a copy of the base data stored in the specified location in the master set prior to merging the replica data into the master set.