Thanks but SD are basically hardrives, and I have hard drives covered... Maybe I'm so used to burning those DVDs is hard to get my head around to not keep doing that as back up.. but I leaning now to blowing it off.

Never heard of Mdisc. Do like the idea of 1000 years archival. At this point though I'd want those disc to be in Terrabytes now that I'm going all hardrive.