This pilot fish wakes up around 1:30 a.m.
to go to the bathroom and checks his work cellphone.
Lo and behold, there are a lot of emails about a very important filesystem that full.
This filesystem contains all the user home directories for an entire facility, and according to the emails, even though several people had deleted large numbers of big files they no longer needed, the filesystem filled up again, and rather quickly.Although the emails stopped around 10 p.m., fish knows he going to have a rowdy mob of incensed users clamoring at his cubicle in the morning, so he gets dressed and goes to work, arriving at about 2:45 a.m.
This particular filesystem lives on a network that cannot be accessible from the internet.