My coursemate accidentally lost all her work for an assignment + an assessment last night when trying to save it to onedrive (assessment+ assignment was due this morning).
Needless to say she was very upset. Thankfully she was given an extension, though for a different reason.
I almost exclusively use Google drive to avoid this stuff. Automatically saves every few seconds and is accessible to me wherever I go.
I had a really difficult assignment last year, I sweated blood to get it finished... I store everything in dropbox so I can move between my desktop and laptop and I decided to clear out my folder of all the documents I had related to my final assignment. I then emptied my recycling can and continued fiddling about on the internet. I went back to the folder to get the file to submit it and I had of course deleted it and emptied the trash. My head immediately started to spin and my heart was pumping so hard, I contacted my boyfriend like Omsm.... cant tpe wot do I do. And he said don't panic you can download something that'll do a file recovery and blahblah and I was desperately trying to work it out and I couldn't. I spent hours trying to get something to work and I just couldn't. He was saying it's fine, you can write it again... and I was saying YOU DO NOT UNDERSTAND I CANNOT WRITE THIS AGAIN. IT WAS IMPOSSIBLE THE FIRST TIME. I then found out that dropbox business accounts were able to access files up to a month old that they'd deleted. So I thought well I'll pay for an account and get it back!!! Then discovered a way of trialling it, and was able to recover the deleted file. Man. It was honestly the best feeling. I've lost other work before but this assignment was my arch nemesis, funny thing is I did better on it than stuff I was far more sure about.