Virtualization offers huge benefits in flexibility, cost-effectiveness and eco-friendliness. However, some design choices need to be made towards deploying Active Directory Domain Controllers in virtual environments. Some of these choices are general choices, but some of them apply to Hyper-V enabled environments specifically. When deploying an Active Directory environment, either for test or production purposes, […]
Domain Controllers are perfect virtualization targets, but virtualizing a Domain Controller reintroduces possibilities to mess up the Domain Controller in ways most of the Directory Services Most Valuable Professionals (MVPs) and other Active Directory enthusiasts have been fixing since the dawn of Active Directory.
Designing and implementing a virtual environment on top of Hyper-V can be challenging. Placement of Active Directory Domain Controllers require additional consideration, especially in some Hyper-V scenario's where Active Directory membership is strictly needed.
Hyper-V in Windows Server 2008 Enterprise and Datacenter Edition offers the ability to make virtual machines highly available by leveraging failover clustering. This however is not a good idea in the case of Active Directory Domain Controllers. In this post I’ll explain why Hyper-V High Availability for Domain Controllers is not a good idea and […]
Designing and implementing a virtual environment on top of Hyper-V can be challenging. In the first four parts of this series I looked at the design choices and management actions regarding Active Directory in Hyper-V environments. Jorge made some interesting points as well, but one Active Directory best practice still remains to be tackled: Physically […]
Virtualization offers huge benefits in flexibility, cost-effectiveness and eco-friendliness. It’s an easy business case to make to any IT department nowadays. After all, Gartner claims the cost of energy outweighs the initial purchase of an x86 server in its first three years. However, most virtualization projects aren’t legacy-free: To make a virtualization business case stick, […]
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 after authoritatively restoring the krbtg account on Windows Server 2008 and Windows Server 2008 R2-based Domain Controllers.
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 nodes is strictly needed. Windows Server 2012, in Active Directory terms, is a big step forward. We’ve been over the majority of the new […]
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. Today, I’m covering anti-affinity.
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 the Active Directory database resides. This way, the Domain Controller asks the storage device to […]