I learned the hard way not to use local drive mappings in Robocopy scripts. I remapped the destination folder's drive letter to another server later in the day without thinking, and I also ran the Robocopy job as a scheduled task out of hours with no monitoring or oversight, and so didn't spot the mistake whilst it was running. Oops.
The new destination server filled up to the point of failure "only" about half an hour before I got back into work the next morning, so I was able to bring it back up relatively quickly. But it still left egg on my face though.
Biting the hand that feeds IT
