Benjamin Short Yoder

US Patent:

8578204, Nov 5, 2013

Filed:

Dec 29, 2010

Appl. No.:

12/930121

Inventors:

Eugene Ortenberg - Falls Church VA, US
Bradford B. Glade - Harvard MA, US
Dale Hagglund - Edmonton, CA
Benjamin Yoder - Westborough MA, US
David Meiri - Cambridge MA, US
Dan Arnon - Somerville MA, US
Dharmesh Thakkar - Northborough MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 11/07

US Classification:

714 411, 714 2, 714 41, 714 62

Abstract:

A system for managing distributed storage includes a collection of one or more compute sites that are connected and that perform a joint computation. A witness node is connected to the one or more compute sites. A membership service allows a change in collection membership, in response to a failure, to continue the joint computation without causing data inconsistency or corruption. If the membership service is unable to reach a decision on the change in collection membership in response to the failure, the witness node controls the decision on the change in collection membership to continue the joint computation. A distributed storage system provided by the system described herein may advantageously meet consistency guarantees and maximize data access even when individual compute sites and/or their interconnects fail.