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Posts Tagged ‘Hyper-V R2’

MVP Comm Camp : Windows Server 2012R2 Hyper-V slide decks

March 24, 2014 1 comment

Hi

For those who were able to attend the MVP Community Camp last Saturday, a big thank you attending and for the positive feedbacks.

The session was all about understanding the various technologies in Windows Server 2012R2 that can reduce downtime for a private cloud deployment

As promised, here is the Hyper-V – Windows 2012 R2 – Overview slide deck.

Cheers!

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Virtualizing ALL Domain Controllers in a Cluster environment. Would you recommend?

April 19, 2012 2 comments

Would I recommend virtualizing All domain controllers on a Hyper-V Cluster?

My answer is : yes and NO.

1. Yes, for an home/test/demo deployment

2. Yes, for a multi-site cluster/single forest deployment, running multiples domain controllers

3. BIG NO, if it is an production environment running in one unique site and I will explain the reasons for that:

Root Domain Controller running on a Physical Hardware

Due the implementation of clustered Hyper-V, it is not recommended to virtualise all domain controllers. In case of connection lost to the Failover Cluster, it will fail to start as it cannot locate AD account for Cluster Hyper V Host. Microsoft Failover Cluster relies on Active Directory for authentication/authorization and it is a pre-requisite to setup failover cluster. That’s a serious matter and Microsoft released a very long articles about that.

References:

–          “Always have at least one DC that is on physical hardware so that failover clusters and other infrastructure can start.”   http://support.microsoft.com/kb/888794

             (Article ID: 888794 – Last Review: December 29, 2011 – Revision: 13.0)

–          Avoid creating single points of failure: Maintain physical domain controllers in each of your domains. This mitigates the risk of a virtualization platform malfunction that affects all host systems that use that platform.

             http://technet.microsoft.com/en-us/library/virtual_active_directory_domain_controller_virtualization_hyperv(WS.10).aspx
             (Updated: April 11, 2011)
Note :  Although it is possible to minimize the risk by having the DC running as a standalone VM, on any Cluster Hyper V, Microsoft does not recommend to run standalone VM on a cluster Hyper V

How about you. What is your thoughts on this?

Recommended articles:  http://blogs.msdn.com/b/virtual_pc_guy/archive/2008/11/24/the-domain-controller-dilemma.aspx

http://www.ms4u.info/2011/05/why-you-should-not-running-domain.html

http://msincic.wordpress.com/2011/06/09/virtualize-domain-controllers-should-i-or-not/

http://support.microsoft.com/kb/888794

http://technet.microsoft.com/en-us/library/dd348476(v=WS.10).aspx

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006996

Comprehensive list of Hyper-V updates ( 2008, 2008R2 and 2008R2SP1 versions )

February 17, 2012 Leave a comment

Quick note: the recommended for all Hyper-V configurations vs. recommended if you meet the scenario documented in the KB.

  • Recommended updates for all configurations: Required column = Yes
  • Recommended update if you meet the scenario: Required column = Yes, ONLY install if the issue applies to you.

Comprehensive list of Hyper-V updates : Applies To: Windows Server 2008

http://technet.microsoft.com/en-us/library/dd430893(WS.10).aspx

Comprehensive list of Hyper-VR2 updates : Applies To: Windows Server 2008R2

http://social.technet.microsoft.com/wiki/contents/articles/1349.hyper-v-update-list-for-windows-server-2008-r2.aspx

List of Hyper-V Packages Updated After the Release of Windows Server 2008 R2 Service Pack 1 (SP1) :

http://social.technet.microsoft.com/wiki/contents/articles/3150.list-of-hyper-v-packages-updated-after-the-release-of-windows-server-2008-r2-service-pack-1-sp1.aspx

NOTE: For Windows Server 2008 R2 Hyper-V systems with SP1 installed, there are two recommended updates for all configurations:

  • KB2263829 – Hyper-V networking issue that multiple customers hit; This fix is also published on WU.
  • KB2525835 – Security Update