You would need to mount the added drive and then copy
(to templates-custom to preserve with updates...RTM) and change the template-
/etc/e-smith/templates/etc/my.cnf/008datadir
to reflect the location mounted. However, security of your db's is a major issue here. Don't mount to a web access area or other non-secure drive location.
Read this thread:
http://www.vbulletin.com/forum/showthread.php?t=185701I have never done this, nor had a need to. You could mess some things up if not done correctly. One thing I have learned... Don't mess with things that work, that you are not very informed about. As an example, note how many users in the forum have asked how to revert their system after upgrading php or mysql or some other core set of packages to a non-SME-supported version. If you just use SME and don't do stuff like that, it works

Craig