This article describes an update that makes the cluster disks log the identity information about the faulty disks to the system event log on a Windows Server 2012 R2-based failover cluster. Therefore, you can easily identify which disk in the storage pool should be removed or replaced.
Symptoms
Consider the following scenario:
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You create a Windows Server 2012 R2-based failover cluster that contains at least two cluster nodes.
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You create a Storage Spaces pool that contains at least two failover clustering-capable disks.
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You add the Storage Spaces pool to the failover cluster and bring the Storage Spaces resource online.
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The Storage Spaces resource tries to come online on a different cluster node after an unplanned failover event occurs.
In this scenario, the Storage Spaces resource cannot preempt existing SCSI Persistent Reservations (PR) because of a disk error on any of the disks in the storage pool. Therefore, the Storage Spaces resource cannot go online.
Resolution
To resolve this issue, install update rollup 2955164. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
2955164 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: May 2014
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More Information
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
