I have been some problems with a virtual servers using xen virtualization servers.
I found this article about support Veritas under Xen, but It's a old article, there are any updates about SF under Xen?
In this case, the virtual server is Rhel 6.5, and I'm using sf 6.1.1
You can find Compatibility Lists over here:
Maybe tell us more about the problems you are experiencing?