The Addonics 5-port Hardware Port Multiplier (“HPM”) is here to let you hook up lots of SATA devices to your computer. There are two versions. The HPM-XA System Version that fits inside your computer where a PCI slot would be where it gives you 5 internal ports – you hook up your SATA controller to the HPM-XA and you’ve got 5 ports ready. The other is the 5 Port HPM-XA Enclosure Version which fits into multi-bay enclosures (which Addonics also sells). This is a good way to reuse an older machines to create a giant server for all your videos, photos, and music. Each version of the HPM costs $99.
Product Page: [HPM]
It is't much more than $99 for motherboard with a ton of SATA ports, but if you max out SATA on a modern system then this could work for you. I guess some people love to throw in tons of their spare HDDs for extra storage too. let alone <a href="external" rel="nofollow">http://www.uxsight.com/category/158816/caddies-enclosures.html">external hard drive enclosures has gone the way of the dinosaur.