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This posting is provided "AS IS" with no warranties, and confers no rights. The opinions expressed within are my own and should not be attributed to any other Individual, Company or the one I work for. I just happen to be a classic techie who is passionate about getting things to work as they should do (and are sometimes advertised and marketed as being able to?) and when I can I drop notes here to help others falling in to the same traps that I have fallen in to. If this has helped then please pass it on - if you feel that I have commented in error or disagree then please feel free to discuss with me either publically or privately? Cheers, Dave
Thin Clients, VDI and Linux integration from the front lines.... Raw and sometimes unedited notes based on my experiences with VMware, Thin Clients, Linux etc.

Leeeeeettttsss get ready to Rumble......  It seems the gloves are off and we could be looking at a cage match here if this early shot from VMware is anything to go by?

From Alessandro - VMware heavily attacks Citrix/XenSource through its partner channel

Apparently VMware is in hurry to clarify its channel how much better its technology is compared to new Citrix/Xensource platform. And do this without kind words. has received a letter addressed to VMware partners just one day after XenSource acquisition which clearly exposes how tough the competition will be:


XenSource failed to gain measurable market share. Its upcoming XenEnterprise v4 release still has major shortcomings compared to VMware Infrastructure 3.

Citrix provides impressive technology, but its competencies and resources are not in the field of system-level virtualization, which is what XenSource needs in order to deliver an enterprise virtualization solution.


XenSource still cannot deliver the capabilities of 3rd-generation VMware virtual infrastructure. Citrix technology will not fill those gaps. Citrix can only ask customers to wait and forego immediate VMware Infrastructure 3 savings and infrastructure benefits.

The core of the XenSource solution, the Xen hypervisor project, is failing as it splinters into incompatible, proprietary offerings. The Open Source community is shifting support to KVM. Citrix may end up in possession of an abandoned hypervisor.

And from Gabe at Brian Madden - A brief history of Xen and XenSource

With the recent acquisition of XenSource by Citrix, it seems like a good idea to take a look at the history of Xen and XenSource so we have our bearings once the dust settles.  This will be a brief look, but I'm sure more details will come out from you "Xen Experts" in the comments.

First off, XenSource is a commercial company that sells a suite of enhancements and management products that augment an open-source hypervisor called Xen.  The lead developer for XenSource, Ian Pratt, is also the chief architect of the Xen open-source project - a competitive leg up by no small means.  In fact, XenSource is the key corporation behind the Xen hypervisor, so any enhancements to Xen also enhance XenSource (and anyone else who uses Xen, for that matter).


Posted on Saturday, August 18, 2007 8:11 AM Citrix , VMware and other Virtualization tools | Back to top

Comments on this post: So let the battle commence, VMware and Citrix are now going to be lining up toe to toe?

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