I purchased a NAS array from http://lime-technology.com/ http://lime-technology.com/ and couldn't be happier with it. 15 drives in a standard form factor case r

I purchased a NAS array from http://lime-technology.com/ http://lime-technology.com/ and couldn't be happier with it. 15 drives in a standard form factor case running off of an internal USB key slackware custom distro. Only one drive is needed for parity and you can swap drive sizes as much as you want, just as long as the parity drive is as wide as your largest data drive. It is running its own version of raid called unRAID, which is a RAID4 derivative. No data is striped across any of the drives so your data loss is contained to the single drive with issues if it is not repairable by parity. The servers are great for the price, check them out.