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US Patent 8001413 Managing cluster split-brain in datacenter service site failover

Patent 8001413 was granted and assigned to Microsoft on August, 2011 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Current Assignee
Microsoft
Microsoft
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8001413
Date of Patent
August 16, 2011
Patent Application Number
12115536
Date Filed
May 5, 2008
Patent Citations Received
‌
US Patent 11677687 Switching between fault response models in a storage system
3
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US Patent 11757795 Resolving mediator unavailability
Patent Primary Examiner
‌
Robert W Beausoliel, Jr.
Patent abstract

A central controlling service for datacenter activation/deactivation control in a cluster deployment to assist in preventing a split-brain scenario. The central controlling service provides a central point of control in the datacenter for application servers to periodically query as to whether to go offline, online, or normal. Redundancy of the central service facilitates detection of datacenter failure by the redundant services interacting to resolve the state of control information. This control information is then used to answer the server queries. On startup from a datacenter failure, a single instance of the central service queries other redundant instance(s) to determine if the single instance is starting up from a datacenter-wide failure or from operations other than total datacenter failure. If the failure is datacenter-wide, a central service protocol assists in resolving to the single service keeping the associated datacenter servers offline; otherwise, the server queries are answered to go online.

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