Citrix And Terminal servers On VMware ESX 3
Friday, 31 August 2007 by Michel Roth
Recently Rene Vester published an article at BrianMadden.com that talks about on what you should look out for when you are hosting Citrix or Terminal Servers in your ESX environments.

The subject of whether or not to host Citrix or Terminal Servers on VMware ESX environments and how to this has always been the subject of a healthy discussion. Rene mentions all the important tips you should be aware of when you do want to virtualize your Citrix or Terminal Servers on ESX. If I could add my own experience, I'd like to tell you that it is important to not hope to get hundreds of users on a box. Usually the maximum number of user sessions is around 20-25 concurrent users sessions on a single virtual Citrix or Terminal Server (using "small" virtual servers).

Besides the article Rene has written, there's also some other good references out there. Take a look at:

Best practices for deploying Citrix on ESX
Tuning list of Vincent Vlieghe's experience and the experience of several users on the VMware forum.

Improving Scalability for Citrix Presentation Server
Vmware white paper presenting data showing the number of Citrix sessions you can sustain when running Citrix Presentation Server 4.0 inside a virtual machine, and then measures scalability with 1, 2, 4 and 8 VMs. For ESX 3, engineering improved Citrix performance in a virtual machine and we want to showcase those gains, as well as present best practices for performance.

Reference and Planning with Citrix Presentation Server
Vmware reference and capacity planning with Citrix Presentation Server paper recommends architecture designs for users implementing Citrix in a VMware environment. It outlines the advantages of deploying Citrix Metaframe operating in virtual machines running on VMware ESX Server.

Performance Tuning Best Practices for ESX Server 3
The paper provides a list of performance tips that cover the most performance-critical areas of Virtual Infrastructure 3 (VI3). This is not intended as a comprehensive guide for planning and configuring for your deployments. The intended audience is system administrators who have already deployed VI3 and are looking to maximize their performance. The paper assumes the reader is already familiar with Virtual Infrastructure concepts and terminology.

Optimizing Citrix Presentation Server with VMware ESX Server
VMworld 2006 presentation.

BriForum 2006 Germany: Citrix, Citrix on VMware, XP Pro on VMware: A performance comparison, and when to use each.
This session provides a technical review of Citrix session performance on a physical server compared to Citrix session performance in an identical VM. By Ron Oglesby.

BriForum 2006 Washington: Operationalizing your VMware environment
Ron Oglesby talks about how you make the "jump" from test to production VMware servers.

BriForum 2006 Washington: VMware in Citrix environments
The session will explore how VMware Server and Workstation and Microsoft's Virtual Server products can be used, and what they can and can't do in these cases.

And last but unfortunately not least: Support for MetaFrame with VMware ESX Server or Microsoft Virtual Server

Related Items:

Improving Scalability For Citrix Presentation Server In VI3 (27 December 2006)
Citrix And VMware Whitepaper (12 March 2005)
Performance Tuning Best Practices for ESX Server 3 (26 January 2007)
BriForum 2006 To Include Technical Sessions About Mixing Citrix And VMware (9 March 2006)
VDI Best Practises Whiterpaper (5 February 2008)
BriForum 2006 Agenda Finalized (22 March 2006)
BriForum 2006 Video: Ron Oglesby On The Feasibility Of Running Citrix In A VM (15 August 2006)
VMware Workstation 6.0 Performance (21 May 2007)
Performance Benchmarking Guidelines for VMware Workstation 5.5 (1 May 2006)
Updated: Thincomputing.net Performance Pack 1.1 (13 April 2007)
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