A couple of months after releasing the whitepaper Designing an Enterprise XenDesktop Solution (for 10,000 VDI seats), which was focused on version 3.0, Citrix is back with another interesting document, this time on version XenDesktop 4.0.
This one, titled High Availability for Desktop Virtualization – Reference Architecture, is an architectural blueprint to build an end-to-end environment that is fault tolerant at several levels: at the virtual desktop hosting platform (aka the hypervisor) one, at the guest operating system delivery one and at the application/user environment delivery one.
The architecture involves the use of technologies like NetScaler, XenDesktop Roaming Users and XenServer Pools and XenMotion.
Citrix also released a companion paper titled High Availability for Desktop Virtualization – Implementation Guide, which is a step-by-step walkthrough of the configuration described in the previous paper.