Upload & Sell: Off
I have a relatively new Mac mini server, with a 256GB SSD and 768GB harddrive, set up as a Fusion drive, which works great. Since these are laptop drives, there aren't a whole lot of larger options, and those which exist are not enough bigger to make it feel like it is worth it. I have two external Drobos with loads of space, but I don't back those up, they mostly contain replaceable data like rips of my CDs and DVDs. I also have two external FW800 2TB drives, but those are my rotating backup drives. I am reluctant to add another drive to the mix, since it would mean pushing the two 2TB drives over the edge, and I would thus need at least two new 4TB external drives, not cheap.
Anyway, I have over 45000 photos, many of which I really don't care about. I need to make a pass or two through everything and just ruthlessly delete anything I haven't done anything with, and which aren't special for other reasons. I expect to be able to get down to at least 15000 photos, maybe even 10000 or less. At this point, most of my data on that machine is photos...