Recorded discs are readable in conventional drives. Besides physical damage, failure of the reflective layer, followed closely by degradation of the data layer, are the primary failure modes of all optically recordable disks. Thus, both the M-DISC and inorganic BD-R physically alter the recording layer, burning a permanent hole in the material. M-DISC DVD does not require the reflective layer. M-DISC uses a single inorganic recording layer, which is substantially inert to oxygen, but requires a higher-powered laser. Standard (HTL) BD-R and BD-R/DL (except LTH BD-R) typically use inorganic data layers, but continue using a reflective layer. ![]() ![]() "Conventional DVD-R and BD-R LTH (Low To High) use recording layers of organic dye and separate reflective layers. I've only just installed it, so no experience yet, but if all goes well, I will have another methid for archiving, on site and off site. I was looking to buy a DVD/BD-R for my PC and came across them by accident. (maybe buy an extra drive and seal it in the same fire proof safe eh? ) Adding 50 or 100GB at a time as new raw files are created seems very reasonable.Īnyway, as I said I just found it. In this case, do it once and you should be good for generations. no more leap frogging and re-re-writing every few years. Of course you need an M-Disk compatible writer, but most DVD and Blu ray readers should read the written disks.Ĭost per MB and time taken to write to multiple disks to archive an entire multi TB RAW library suddenly becomes reasonable again, with 100GB disks and a promise of 1,000 year life span. Originally Available in 4.5GB DVD size, they are also now available in 25gb, 100gb and soon 50gb Blu Ray Disk capacities. I did not add an extra zero, yes Virginia, rated fro 1,000 years. Navy has tested and adopted them, relying on the 1,000 year archival rating. ![]() Not sure what cave I've been stuck in, but as often repeated on this forum for oh, about 8 years or so, you can quote me saying over and over "Hard drives are the only reasonable archival storage for RAW files" By chance, I just discovered a thing called "M-Disc"
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