With the XenServer product family, you can create XenVMs that run the the following supported Linux operating systems:: 

• Red Hat Linux 3 (installed via P2V of existing instance)
  
• Update 6, 7, 8
• Red Hat Linux 4 (installed via vendor media repository on an installation server)
  
• Updates 1, 2, 3, 4
• Novell SUSE Linux Enterprise Server (installed via P2V of existing instance)
  
• SP 2
  
• Debian GNU/Linux 3.1 (a.k.a. sarge) (installed via built-in template)