We are looking at alternatives to Vmware's Server virtuatlization technology mainly due to costs. We would also like to avoid Microsoft's Hyper V. We need to run Windows operating systems - 2003/2008 as Web Servers as mission critical applications. Therefore, High Availablity is a major requirement. After some research, we are making a decision of going with Xenserver from Citrix.
The question is that has anyone used Xenserver for production environments of Microsoft based platforms and what has been your experience in regards to management, reliability and support. Thanks for your time.