Last week during the VDI day I still mentioned that we only supported 64 virtual machines running on a clustered Hyper-V infrastructure. Well we’ve changed the support limits of virtual machines running in a clustered environment towards 1000 VM’s per cluster and still a max of 384 VM’s on each node.
Below you can find the table that explains the max limit for failover clusters. Have a look at the full table on the TechNet library
The following table lists the maximums that apply to highly available servers running Hyper-V. It is important to do capacity planning to ensure that there will be enough hardware resources to run all the virtual machines in a clustered environment. For more information about requirements for failover clusters and Hyper-V, see Hyper-V: Using Hyper-V and Failover Clustering (http://go.microsoft.com/fwlink/?LinkID=129063).
Nodes per cluster
Consider the number of nodes you want to reserve for failover, as well as maintenance tasks such as applying updates. We recommend that you plan for enough resources to allow for 1 node to be reserved for failover, which means it remains idle until another node is failed over to it. (This is sometimes referred to as a passive node.) You can increase this number if you want to reserve additional nodes. There is no recommended ratio or multiplier of reserved nodes to active nodes; the only specific requirement is that the total number of nodes in a cluster cannot exceed the maximum of 16.
Running virtual machines per cluster and per node
1,000 per cluster, with a maximum of 384 on any one node
Several factors can affect the real number of virtual machines that can be run at the same time on one node, such as:
Last week we organized a Virtual Desktop Infrastructure day together with Citrix. We’ve published the sessions onto TechNet Edge.
In this session we will guide you through the desktop virtualization strategy and show you how Citrix and Microsoft will help you reduce the costs of Managing your virtual desktop infrastructure. We will answer questions like: “Will desktop virtualization really fit every user?”
Speakers: Jurgen Van Duvel & Andreas Van Wingerden
In this more technical session we will drill down into the Microsoft virtualization architecture of VDI and determine what key questions need to be asked and answered around required components, networking, capacity and end user experience. In the second part of the Presentation we will drill down into the Citrix components of our joint VDI solution. You will learn what the different key components are and how to setup your own test environment.
Speaker: Arlindo Alves – http://blogs.technet.com/b/aralves/
In the second part of the Presentation we will drill down into the Citrix components of our joint VDI solution. You will learn what the different key components are, what they add on top of the Virtualization back-end. By then end of this session you will be geared up with the knowledge to setup your own test environment.
Speaker: Andreas Van Wingerden - Citrix
Hyper-V poster is a great visual tool to help in the understanding of the key features and components. It highlights key Hyper-V components including:
Download the Hyper-V Poster
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