Ben:
Are "centralized" database (SQL) servers best left out of virtualization
...
and intensive querying, Accounting Systems and so forth.
It really depends on the hardware you allocate to the VM and how intensive the usage is.
Personally, if I have an intensively queried database server, I want it directly on hardware.
Neil
-- Neil Aggarwal, (281)846-8957, http://UnmeteredVPS.net/centos CentOS 5.4 VPS with unmetered bandwidth only $25/month! No overage charges, 7 day free trial, PayPal, Google Checkout