Seriously. You know you'e neurotic when a HDD gets down to 1Tb and you start panicking.

Cleaning an old Drobo.
Copying stuff across from another.
Status shows 1.10Tb left on target Drobo.
OH NO!
WORLD IS GOING TO END!
Because?
Aliens!

Wake up call. 1 Frickin TerraByte left. Seriously?

I've being doing this for waaaaay too long.