This was a simple project I made maybe a year ago to be able to have an FTP server running at all times to act as a cloud drive for my friends and I, and to also have my own NAS for cheap. It just sits up in my closet doing its thing 24/7. The first 500 GB HDD has an ~80 GB partition for windows, a ~50 GB partition for my FTP server, and the rest is for media storage. The other 2 500 GB drives are in RAID 1 with my unedited youtube content on them.
In case you couldn't tell it's a Dell Optiplex with extra hard drives! Very exciting I know but I wanted to get this build up on here anyways. Everything was free because I managed to find a bunch of PC stuff being given away together for free on craigslist.
To follow the style of my main gaming PCs which I refer to as "Extrodius Lv._", I have decided to call my server PC line the ExtroServer PCs. I don't know when ExtroServer Lv.2 will come but I was thinking I might get a case that can fit a ton of hard drives, and then connect them all to a Raspberry Pi inside. It would certainly be cooler than a dell optiplex but this thing will do for now.