Summary

In this chapter, we learned about Virtualization of XenApp farms. In particular, we talked about:

• Deploying XenApp 6.5 in a virtualized environment, including advantages and disadvantages, Virtual machine performance and host scalability and more

• Deploying XenApp 6.5 on Citrix XenServer, Microsoft Hyper-V, and VMware vSphere virtual machines

• Cloning XenApp 6.5 virtual machines

This is the last piece of advice. Virtualization will provide a lot of benefits and savings. However, one of my preferred reasons to implement VM over physical servers is not related to performance or management, it is related with reliability. Let's use an example to clarify the idea:

We have two identical servers. One is the physical server running XenApp. This server can support 120-140 users. Now we have the second server, running a hypervisor with four virtual machines. Each virtual machine can support 25 to 35 users, depending on the load. So the hypervisor can support around 100-140 users.

If the physical...