I just plugged in my main drive after ordering the drives I planned on using for backup... and now that drive is beeping and not being registered on my computer. Thankfully, I have most of my data saved on my main computer and a different drive, but I'm pretty sure I just lost about ~300gb or so of data in the well-organized format I'd saved it in, and some of it is lost forever now. It's funny how that happened right after I made this post! Never again will I underestimate the backup rule.