Be careful turning it off.
Things like that seem to like to die when going from power off to power on, at least in my case.
We had an X-ray system die at work this month after it was turned off for the first time in several years (one of the power supplies that seems to die about every 10 years died again). :-/
No doubt you're going to tell me that you turn it off every day. ;-)
Good luck with the transfer. Don't depend on it working though (have other backups)!
Cheers,
Scott.
(Whose grandpa had an ancient light bulb on his porch, but it wasn't quite that old. Maybe 40 years?)