Article ID: 2847176 - View products that this article applies to.
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Symptoms

Assume that you run the Diskpart.exe command prompt utility to extend a Cluster Shared Volumes File System (CSVFS) volume on a Windows Server 2012-based cluster. The volume extends beyond the size limit of the file system. In this scenario, Disk Manager and Diskpart.exe recognize the file system as a RAW file system instead of as a CSVFS file system.

For example, assume that a file system that was formatted by using an 8 KB cluster size has a size limit of 32 TB. When you extend a CSVFS volume beyond 32 TB, Disk Manager and Diskpart.exe recognize the file system as a RAW file system.

Resolution

After you install this update, the virtual disk service prevents you from extending CSVFS volumes beyond the size limit of the file system.

Update information

To resolve this issue, install update rollup 2855336. 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:
2855336 Windows RT, Windows 8, and Windows Server 2012 update rollup: July 2013

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
For more information about the default size limits of clusters, click the following article number to view the article in the Microsoft Knowledge Base:
140365 Default cluster size for NTFS, FAT, and exFAT

Properties

Article ID: 2847176 - Last Review: September 25, 2013 - Revision: 3.0
Applies to
  • Windows Server 2012 Standard
  • Windows Server 2012 Datacenter
  • Windows Server 2012 Foundation
  • Windows Server 2012 Essentials
Keywords: 
kbqfe kbfix kbexpertiseadvanced kbsurveynew kbhotfixserver KB2847176

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