HP StorageWorks Cluster Extension Support for Majority Node Set Quorum With File Share Witness (KB921181) in Microsoft Cluster Environments White Paper
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Overview: Majority Node Set (MNS) quorum with File Share Witness (FSW) is a new quorum resource option for Microsoft Clustering made available by Microsoft Hotfix 921181. FSW allows the use of a simple file share to provide a vote for a MNS quorum - based two-node cluster. This allows a two-node MNS cluster to survive a single node failure when the FSW feature is utilized. This Hewlett-Packard paper provides an overview of this new quorum resource option.