I'm using an external USB HDD as my Time Machine backup disk for my MacBook. I have it plugged in as long as I'm working at my desk. I don't have it with me when I take the laptop somewhere else. However, I'm afraid that at some point I'm going to need to go to a meeting or something that requires me to bring my laptop, which means I'll have to unplug my backup disk. What if I can't wait for it to finish because a client is here? Time is money, you know!
My question for you is whether Time Machine fails gracefully if I do this while a backup is running. And I'm not talking unsafe unplugging; I would use the "eject" function.
Normally, I would try something like this myself, but a lot is at stake here if it fails!