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. 12, 2024
Filed:
Mar. 22, 2021
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Inna Reznik, Tel Aviv, IL;
Ahia Lieber, Tel Aviv, IL;
Peter J. McCann, Mason, NH (US);
Joe Caisse, Burlington, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Techniques for providing a fencing scheme for cluster systems without inherent hardware fencing. Storage nodes in an HA cluster communicate with one another over communication paths implemented through a variety of mechanisms, including drives and network connections. Each storage node in the HA cluster executes a fencing enforcer component operable to enforce actions or processes for initiating fencing of itself and/or initiating self-fencing of another storage node in the HA cluster determined to be malfunctioning. By providing for richer communications between storage nodes in an HA cluster and a richer set of actions or processes for fencing a malfunctioning storage node including self-fencing, the malfunctioning storage node can be made to exit the HA cluster in a more controlled fashion. In addition, a remaining storage node in the HA cluster can more safely take on the role of primary storage node with reduced risk of data corruption on shared resources.