This is a bit off topic, so please bear with me! We're about to embark on a project to virtualise practically our entire server estate. Two vendors have quoted - one recommending XenServer and the other VMware. Both saying their solution is the best and ridiculing the other, so we are a little confused! We have 100 users all running thin clients & logging on to published desktops. We're swaying towards XenServer with an HP Lefthand SAN but I'd like a little advice from the list first please... I've read the Tolly report<http://www.tolly.com/DocDetail.aspx?DocNumber=209103> on Citrix performance via XenServer, which is great, but what about the other servers? We will also be running SQL 2008, Exchange 2010, as well as the usual file servers, DCs etc etc. Is anyone running a similar setup to us on XenServer? How is it going? Any pitfalls? Any regrets? Any issues with software compatibility? For example, we also run BlackBerry Enterprise Server and Equisys Zetafax - both are supported in a VMware environment, but XenServer is patchy. In theory it shouldn't matter, but there's always the chance that if we run into issues and log a support call, they'll just turn around and blame XenServer. Thanks. BM Polyco Ltd Disclaimer This e-mail and the information it contains are confidential. If you have received this message in error please notify us immediately. You should not use or copy it for any purpose nor disclose its contents to any other party. The contents of this communication are advisory and are not binding on the Company unless supported by authorised documentation. This e-mail has been scanned for content by Websense Hosted Email Security<http://www.websense.com/>.