this is a 32 bit old/small server. its doing audio processing for an internet radio station, so it really shouldn't be a VM.
Why a VM?
and I haven't seen any centos with a zfs / ... this system has 2 240GB disks which are meant to be mirrored.
Its a bit fiddly to set up / but it works and is several orders of magnitude more awesome than LVM and ext/xfs.