I only have to maintain a relatively small environment, so I don't have the same kind of personal experience as someone in a large enterprise. However, I have talked to a number of colleagues that claim that it doesn't need a lot of support, if it's implemented correctly.
In fact, I have a friend that is responsible for this at a Fortune 500 company who told me that support for drive
Check out the entire Storage Encryption FAQ guide.
This was first published in October 2007