I'm having an internal debate over using XenServer and hoping for some info from 'those who are more informed'.
Specifically: VMWare states that it's not a great idea to mix hardware of different configurations when building a VMotion / HA setup. Does this advice hold true for XenServer and it's equivalent ('XenMotion')?
Best Answer
You need "broadly compatible hardware" to create a XenServer Pool. According to the docs (below), the main concern is the CPU's. I can not find any written details about disks, network etc although anecdotally from my own experience, it will make your life much easier if you do have identical hardware, especially the NIC's.
A pool may contain up to 16 servers running the same version of XenServer software, at the same patch level, and with broadly compatible hardware - see Pool Requirements for details of hardware and configuration prerequisites.
All of the servers in a XenServer resource pool must have broadly compatible CPUs, that is:
http://support.citrix.com/proddocs/topic/xencenter-61/xs-xc-pools-requirements.html http://support.citrix.com/proddocs/topic/xencenter-61/xs-xc-pools-about.html