Consider the following scenario:
You have a failover cluster in which nodes are running Windows Server 2012 R2.
The cluster uses a three-way mirror storage space that is created by using the Storage Spaces feature.
Multiple physical disks in the three-way mirror storage space are disconnected. The number of disks that are disconnected is less than 50 percent of the total physical disks in the three-way mirror storage space.
In this scenario, this issue occurs.
To resolve this issue, install update rollup 2975719. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2975719 August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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