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:
Nov. 19, 2013
Filed:
Mar. 31, 2004
Philip E. Tamer, Westboro, MA (US);
Douglas E. Lecrone, Hopkinton, MA (US);
Daryl Kinney, Hopkinton, MA (US);
Paul A. Linstead, Shrewsbury, MA (US);
Michael E. Specht, Acton, MA (US);
Philip E. Tamer, Westboro, MA (US);
Douglas E. LeCrone, Hopkinton, MA (US);
Daryl Kinney, Hopkinton, MA (US);
Paul A. Linstead, Shrewsbury, MA (US);
Michael E. Specht, Acton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Described are techniques used in defining and maintaining group data used by multiple host systems. Group data is stored in a distributed fashion on one or more data storage systems. If a device of a data storage system belongs to a group, group data for that group is stored on that data storage system. Group data changes made by one host are communicated to the other hosts by accessing a common data area on each data storage system using a daemon executing on each host. Remotely mirrored groups may be defined on a remote data storage system. A remote mirror of a group includes group data modified in accordance with a point of view of the remote data storage system and a remote host.