Around 27 hours at new customer location.

They had a server failure due to incompetence.

They had fired their own IT guy and called us 6 months later because the server stopped responding.

First diagnostic. 2 drives are dead in a raid 5 with one hot spare. Raid controller then proved to be broken once the disks was replaced.

Waiting for new raid controller and installing.

Backup non existing, no one changed dat tape during the 6 months without IT. The tape was just a transparent plastic band, no media left.

Raid config is stored in static ram on controller, no backup!

Several hours in tech support to find out how to rebuild raid config from existing disks.

Proves to be impossible to rebuild raid set due to some checksum failures.

More hours with support to enable some diagnostic read only mode to mirror low level content to external drive.

Then many more hours to copy parts of the tree until it gets an error, restart after that and go on.

In the end we got around 70% back.

During this time I manage to be in contact with the raid manufacturers all support centers, one in europe, one in the us and one in Taiwan, switching each time one if them closed for the night.

The customer later declined a steady support contract due to us being to expensive ;)

Some just don’t want to learn.

Around 24 hours. Over 48 hours!
It's was in high school, I had a job in grocery store stucking up shelfs. I had two shifts that weekend. it's was Saturday I had just finished working a 13 hours shifts and my mates was pressuring me to join for video games and drinking.
Ofc I went there, got super drunk (beer pong and drinking league of legends).
It got really late(around 4am) and I knew I was supposed to be at work at 6 pm, so I call dad told him to drive me home and then to work! He did as awesome as he is!
Had to work 12 hours, I did 11 hours then my boss send me home.I was basically til at bit drink then I arrived I work for 4 hours I had the worst hangover the last 7 hours of work.
When I came we had guest and I had to be present!
Poor life decision, no regrets!