My worst IT disaster was suffering from a hard drive failure, click of death. I had warning of a few days of it, and I deliberately kept the pc on 24/7 instead of normal switch on/off, to make sure the drive stayed alive until its replacement arrived.
Obviously I had to turn the pc off to change the drive, it was not hot-swapable. When I powerd the pc up, the old hard drive failed, didn't work at all. I was faced with losing all the data on it. I left the drive alone for months wondering what to do, reading different ideas online, some of them weird.
Eventually I decided to try the least distructive idea first. I put a sheet of paper on the failed drive to make sure the label doesn't come off, and heated up the clothes iron, then applied the iron directly onto the top of the hard drive. When the drive casing was wam enough (not so hot as to make it hard to carry), I took it to my pc, and powered up.
The failed hard drive came to life, and I managed to grab all the files on it onto the new hard drive, uncorrupted.
Out of interest, the failed drive failed about three months before I do forced drive change as a backup / failure prevention. I got lucky.