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Online archiving is certainly an option, but even in the age of ubiquitous broadband, online storage is relatively slow, even slower than optical in many cases. But it’s a once-in-a-while deal, so just start your backup, minimize it, and go on about your business. That’s way off the DVD maximum, which is 16X or 21MBps. You may view this as an opportunity to clean house or a deal-buster.Īlso, as always, optical is relatively slow: M-Disc BD discs write at a rather pokey 4X/18MBps (6X/27MBps is the BD max), and M-Disc DVD is also 4X, or 5.28MBps. At least until the next technological storage shift.īecause the media is expensive and not as capacious as a hard drive, you’ll have to choose what’s really important and perhaps divvy it up across discs. Just keep in mind that this is not media that you’ll have to roll over every few years, as with CD/DVD R/RW or dye-based BD-R LTH. At retail, the DVDs are about $3, the 25GB discs about $5, the upcoming 50GB discs around $10, and the 100GB $20 or so. But as my experience with the PX-B320SA proved, if the firmware doesn’t like it, it won’t work.īut M-Discs aren’t cheap. You should see a logo something like this on compatible DVD burners.Īs BD-R HTL was part of the Blu-ray standard, and M-Disc functions much the same way, any BD burner is physically capable of writing M-Disc BD media. I also tried a vintage 2006 Plextor PX-B320SA, but it didn’t recognize the M-Disc BD-R media as legitimate media for writing.
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Millenniata was nice enough to send me an M-Disc-compatible optical writer, the Samsung/TSST SE-506CB.RSBD, for write testing. I’m not going to live a thousand years, so the only thing I could test was compatibility. The comparative delicacy of the polycarbonate outer layer of the disc is why the media lasts “only” a thousand years. The only failure point for the material used in the M-Disc data layer is oxidation, which, according to Millenniata materials scientists, shouldn’t be an issue for about ten millennia. (We’d guess that BD-R HTL would survive as well.) The Department of Defense hasn’t tested the new M-Disc BD-R, but as the technology is largely the same, the results should be as well. Every DVD failed-except the M-Discs, which suffered no noticeable degradation. It tested M-Disc DVD+Rs along with archival quality DVD+R/RW and DVD-R/RW, subjecting them three times to a 185-degree, 85-percent humidity, full-spectrum light environment for 26.25 hours. It’s nearly transparent, but there is a data layer present.Īs to that thousand-year claim, the U.S. One note: Don’t freak out when you see an M-Disc DVD+R. If you can’t trust media that’s rated for 1,000 years, you’re pickier than I am. M-Disc also uses a non-volatile data layer, but an even better, rock-like one which is said to last ten times longer than BD-R HTL. Why? Because the data layer is a non-volatile substance, as opposed to the light-sensitive organic dye used in CD/DVD-Rx and less expensive BD-R LTH (Low To High, dark to bright). And, even though few are aware of it, write-once BD-R HTL (High to Low, i.e., reflectivity, as in bright to dark) is rated to last 100 to 150 years. Same deal with DVD and Blu-ray moves, which are manufactured similarly. CDs from the 80’s and 90’s should still play fine, assuming you haven’t scratched them up. The advent of relatively unstable, dye-based CD/DVD recordable and rewritable, as well as the lack of quality standards governing them, caused many users to forget that pressed optical discs are very long-lived. This diagram illustrates the difference between dye-based and inorganic recordable optical discs.