minidisk vs. dedicate

[Little, Chris]

i'm creating an 11 physical volume vg for the datafiles of an oracle
database.  i'm curious as to which would serve me better, full pack
minidisks or dedicate the volumes to the guest. one vm "expert" recommended
dedicating the volumes to the guest, thereby bypassing any vm overhead.  at
the same time i understand that vm can do some minidisk caching.  any ideas?