Originally Posted by evermooingcow
ESX tends to be very picky about hardware. If you are running this at home you may want to go ahead and try it on a spare disk to see if everything will work. Xen is essentially Linux so there isn't much that won't work.
You're right about that. On my desktop I just virtualized with HVM (with Fedora), and then I'm testing Xen on a spare disk, it's as easy as installing the packages and kernel really. Linux is sometimes too simple at times.
So, I'll take your suggestion to heart, I'll set up a separate disk and test out the performance with VMware. I've been reading different things on memory overcommit which sound interesting, though from what I read it's not available in the free version, so no loss either way.
+REP for all who helped.
I'll be back with more questions (hopefully not) once CentOS 6 is released and I really
get to work.