Blue Ray Data DVD's

Hi Creatives,

In this new "tapeless" world, we find all our media and projects on shared storage, and stand alone hard drives. and we have a special need to back up lots of media, AE projects, FCP projects, and elements, as data, in case of drive failure, on to a relatively fast, inexpensive storage device. we sometimes back up to dual layer DVD's, works well, and if taken care of can last decades, but just not fast enough, and we end up having to break projects in half in order to fit them. I have heard of blue ray disc burners, and 50gigs of data ?!? that would be huge for us. do they work on macs ? stand alone ? or do they have to be installed inside the G5 ? is it something that can be swapped around to other G5's ? does it require special software like toast ? any info would be greatly appreciated.

thanks !!

Bernardo