quiet, low power, easy option ...
$300ish for a cheap 4 bay home NAS
$500ish for 4x 3TB WD Red drives
Run them in Raid 5
9TB of space with some redundancy for $800ish
If you want more space ... then I would build a server with supermicro board, xeon, 16GB ECC, and a nice big case with lots of properly cooled 3.5 inch bays, an SSD or even a flash drive for the OS .... Base components around $700 and up
Then build a ZFS array with unraid ... if you use 3TB drives, then 8 drives, with 2 drives parity ... would give you 18TB usable space for under $2000 ...
If you stick a couple of pci express SATA cards, you could possibly use that $200 mobo and a very big & well designed case and fit 20 or so 3TB drives before you run into power or thermal issues ...
Then you could add additional drives with ESATA DAS enclosures...
If you don't need redundancy, then cost per TB goes down, if you want to do it truly ghetto style, you could just use a cheap used mobo + CPU, but then you would likely lose ECC ...
In any case ... if you want to store many TB of data, it's cheaper to do it at home, but if your house burns down then you lose the data.
My biggest issue with cloud storage is not the cost of cloud storage, but ISP caps and upstream bandwidth limitations.
I have Uverse, and the highest Tier available here gets me like 20mbit down, but only around 1.5mbit up.
If I uploaded 24 hours a day, 7 days per week, at the max speed, it would take almost 600 days for me to upload 9TB. That makes cloud storage for large home data storage completely useless for shoddy/slow ISPs.
If you have an ISP and you get 15mbit or more upstream ... then essentially you could handle around 4-5 TB per month in uploads to the cloud ... But there would likely be lots of fees for using so much bandwidth...
Anyhow ... Cloud is great for backing up important files. So, use it for the most important stuff ... trivial things that you horde ... don't bother
