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The things that are better left unspoken

a blog by Sander Berkouwer

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Virtualization-safe(r) Active Directory in VMware environments, Part 2
In the first post of this series, I’ve shown how to uncover the VM-GenerationID, the random value that unlocks all that Windows Server 2012 Active Directory Domain Services magic, on VMware’s vSphere and Workstation virtualization solutions. Today, I’m Read More...
Virtualization-safe(r) Active Directory in VMware environments, Part 1
When you check my list with virtualization platforms that support Virtualization-safe(r) Active Directory through the Microsoft backed VM-GenerationID capability , you’ll notice that VMware has been supporting it in their products for a while now: Both Read More...
I will be speaking at the 2014 NL VMUG Event
There are many organizations with the ‘VMUG’ initials. I’ve presented sessions to the UK VMUG, which stands for Virtual Machine User Group. In the Netherlands, VMUG stands for VMware User Group. This organization hosts their annual meeting on March 6th, Read More...
Active Directory in Hyper-V environments, Part 10
As you would probably know, as a regular reader of this blog, Active Directory Domain Services performs a storage trick to prevent corruption in the Active Directory database. It does this by disabling write-back caching on the physical spindle where Read More...
KnowledgeBase: Physical GPU in Windows Server 2012 Hyper-V settings is unavailable post domain join
Last week, Microsoft introduced KnowledgeBase article 2878821 , discussing some strange behavior on a domain-joined Windows Server 2012-based Remote Desktop Virtualization host. When such a host is added to a domain and the default domain policy is applied, Read More...
I will be speaking at the UK VMUG Meeting in Leeds
When you regularly check the website of the UK Virtual Machine User Group (VMUG) , you might have noticed that they have a series of meetings coming up in Manchester , Leeds and London . Now, when you scroll through on the details of the Leeds meeting Read More...
Cases where VM-GenerationID doesn’t help make Active Directory virtualization-safe, Part 2
Yesterday, I talked about the new Active Directory virtualization safeguards in Windows Server 2012 (and beyond) and how Joe Richards triggered me to think about cases where the Active Directory virtualization safeguards (powered by the new VM-GenerationID) Read More...
Cases where VM-GenerationID doesn’t help make Active Directory virtualization-safe, Part 1
Joe Richards posted an interesting blogpost a while ago on why Active Directory VM-GenerationID functionality is not an alias for Active Directory anti-USN Rollback functionality . In it, he makes some valid claims: You are only protected in very limited Read More...
Active Directory in Hyper-V environments, Part 9
I have written a lot about Active Directory Domain Controllers and Hyper-V in this series. So far you’ve seen recommendations on host configuration, guest configuration, security and converting physical Active Directory Domain Controllers to virtual ones. Read More...
KnowledgeBase: Active Directory database becomes corrupted when a Windows Server 2012-based Hyper-V host server crashes
As I’ve written before, Microsoft has made significant strides on making Active Directory Domain Controllers safe(r) to virtualize in Windows Server 2012 . Sometimes, however, you encounter a situation that makes all that progress seem to disappear. Microsoft, Read More...
Citrix XenServer joins the VM-GenerationID family
One of the new features in Active Directory Domain Services in Windows Server 2012 is Virtualization-safe(r) Active Directory . This feature makes it easier and safer to deploy and manage virtual Domain Controllers through the VM-GenerationID capability Read More...
I will be speaking at the UK VMUG Meeting in London
I just received confirmation on speaking at the UK Virtual Machine User Group (VMUG) Meeting in the Hilton Doubletree hotel in London on Tuesday May 21, 2013. I will be delivering my session on virtualization-safe(r) Active Directory and Domain Controller Read More...
List of Hypervisors supporting VM-GenerationID
Microsoft introduced the VM-GenerationID in Windows Server 2012, to enable Virtual Machines (VMs) to notice when they’re snapshotted, restored and/or cloned. Active Directory is the first technology to put the VM-GenerationID to good use. The following Read More...
Active Directory in Hyper-V environments, Part 8
Designing and implementing an Hyper-V environment can be challenging. Placement of Active Directory Domain Controllers requires additional consideration, especially in Hyper-V Failover Cluster scenarios where Active Directory membership for the cluster Read More...
Active Directory in Hyper-V environments, Part 7
For a while, Microsoft’s KnowledgeBase article 976424, titled Error code when the kpasswd protocol fails after you perform an authoritative restore: "KDC_ERROR_S_PRINCIPAL_UNKNOWN" , has been available to solve issues with unexpected behavior Read More...
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