Citrix XenServer is Trash r1 (See the current copy)
Citrix XenServer is Trash -- DO NOT USE IT
Problems:
- Poor Linux distribution
- Poor disk support
- Doesn't support specifying a local disk image
- Can't use a raw disk image, must be a VHD
- Conversion from raw disk image to VHD loses sparseness and causes XenServer to crash
This could all be avoided by using Xen with any non-crappy Linux distribution.