FIX: Virtual Machine Manager crashes when you try to manage a mirror LUN on a secondary storage array in Windows Server 2012

Á við um: Windows Server 2012 DatacenterSystem Center 2012 Virtual Machine ManagerWindows Server 2012 Datacenter


Consider the following scenario:
  • You run Microsoft System Center 2012 Virtual Machine Manager Service Pack 1 on Windows Server 2012.
  • You have two EMC Storage Area Network (SAN) storage arrays that are managed by one EMC Storage Management Initiative Specification (SMI-S) provider.
  • You create one logical unit number (LUN) on the first SAN storage array and the additional mirror LUN on the secondary SAN storage array in Virtual Machine Manager.
  • You try to manage the mirror LUN on the secondary storage array in Virtual Machine Manager.

In this scenario, Virtual Machine Manager crashes.


This problem occurs because Virtual Machine Manager does not handle the LUNs from more than one storage array when the LUN ID on the first LUN is the same on both storage arrays. Virtual Machine Manager does not understand which storage array each LUN belongs to.


This hotfix is also available at Microsoft Update Catalog.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To apply this hotfix, you must have Windows Server 2012 installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


See the terminology Microsoft uses to describe software updates.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.