I was moving customer's two servers to virtual machines. They told me "do not touch server A, it has network share with pdf documents that are critical for our

I was moving customer's two servers to virtual machines. They told me "do not touch server A, it has network share with pdf documents that are critical for our business. Take server B and make VMs there". So I format the drive, install win server on it, and the owner runs in with red face "omg did you delete it? it was on server B!" And of course there were no backups. And pdf files were indeed crazy important. The customer is in panic and despair, he is crying that we must remove the hard drive and take it to some data restoration company. We shut down the server, and they ask me to check accountant PC before I leave, she was complaining that it is very slow. I turn PC on and I get pop up notification "network share is off, but your autonomous files are available". It turns out she put the checkbox on that network share by accident, but now we were sitting in front of her desktop and looking at absolutely intact folder with all pdf files. We succesfully finished moving both servers to VMs after celebrating. That was the only time in my life when I saw that checkbox in real action.