[CentOS] LVM, usb drives, Active Directory

>> What are my best options?
>
>The mere thought of doing what your tasked with doing makes me
>want to drink a lot of hard alcohol.

I'll second that but say I want some alcohol anyway:)
Keep in mind that most external usb enclosures don't provide adequate cooling
for devices that get written to any more aggressively than some user and his pics
collection.