[citation][nom]lamorpa[/nom]Can anyone tell me how they could possibly fill a 4TB drive (or 1TB for that matter) if they are not illegally downloading copyrighted material. I just don't think there is that much free content out there (and if it is free, why store it, just stream it the next time you need it)[/citation]
Option 1: Try editing uncompressed 1080p video footage some time... It will eat 1TB for breakfast. And then lets say you want to do multiple projects... 4TB is a great starting place.
Option 2: 4TB is handy if you are doing file storage for your household. My wife and I have ~65GB of music, and ~2TB in movies we own (every movie we buy goes on the network, and the DVD/Blueray stays in it's case hopefully never to be touched again), plus 45GB of home movies (and we just bought the camera in August! Amazing how much video can be made of a little baby! lol), plus ~20 years of documents, save files, and stuff (150GB). So yes, legally, it is very very easy to fill up 4TB if given a little time.
Option 3: Say you have a home network with 4 computers (2 desktops, 2 laptops). The system files for each would average to ~100GB to backup (100GBx4), plus you may want incrimental backups every night or week and keep them for a month (~500GB), plus monthly full backups for a year (100GBx4x12=4.8TB), and that does not include redundancy...
Long story short, 4TB is easy to fill up. We have a total of 5TB total in various computes in the house and I can't wait to consolidate to a few 4TB drives in Raid 1 or 10 when they come down in price next year.