Hypervisors - Type 1 / Type 2

There is a lot of talk about the Cloud, but what really makes the whole cloud possible is the hypervisor. The hypervisor is what separates the "workload" from physical hardware. This is what allows us to move the workload around, from hardware to hardware. The hypervisor has been around since 1965 with IBM, but only recently has the adoption become exponential. And with the visibility of the Cloud and discussions about Virtual Desktop Initiatives/Infrastructure (VDI) there is now more emphasis on the hypervisor, and the "two types."

Citrix Architecture

The first thing about Citrix Architecture is to understand the ICA protocol. ICA is a presentation-layer protocol on the OSI-layer (6). ICA is a very thin protocol and is optimized for the WAN with high latencies, it works over SSL and is bandwidth optimized and supports QoS.

Since this is OSI-Layer 6, what does ICA do for optimization. The ICA packet contains the following headers: Frame Head, Reliable, Encryption, Compression, Command, Command Data, Frame Trail. The command is the only required information.

Optimizing Windows 7 for VDI

It amazes me that we are still talking about how to deploy Windows 7 and that XP is still a mainstream OS, and likely will be until we get closer to 2014 when XP support ends. I find Windows 7 to be one of the best versions of Windows. Almost enough to get me to switch from Linux, almost. That said, I do a lot of VMware View work and my VDI clients ask what changes I make to speed up the VDI desktop.

Optimizing Windows XP for VDI

It is important to optimize the desktop for your VDI environment, this is true if your environment is Citrix XenDesktop or VMWare View. This document will outline some of the key changes that need to be made with your desktop. If this is to be your template give it a meaning full generic name such as "xp-template"
Recommended Configurations:

Virtual Desktops - Graphic Applications and Mouse

I recently came across a unique situation with a remote office as we virtualized the servers and looked to virtualizing the workflows. For this office we deployed Citrix XenDesktop 5.5 and provided a desktop to each user. Each user was provided a persistent desktop. This persistent desktop was created from a master image with installed core applications. Then each user had specific applications installed into their desktop creating a one-to-one desktop to user relationship.


Subscribe to RSS - Citrix