[HN Gopher] Optical storage - the future of long term data prese... ___________________________________________________________________ Optical storage - the future of long term data preservation (2015) [pdf] Author : dsego Score : 19 points Date : 2021-11-12 09:44 UTC (2 days ago) (HTM) web link (www.snia.org) (TXT) w3m dump (www.snia.org) | jeffbee wrote: | What is the utility of cloud computing for archivists? Is it too | expensive? It seems like the longevity is fairly proven at this | point. If you put something in S3 in 2006, it's still there. GCS | was launched over ten years ago, too. With a multi-cloud strategy | you could probably make the case for durability, certainly as a | 2nd or 3rd replica that just happens to be dramatically more | convenient than optical discs. | | Considering that many government records are now produced in the | cloud anyway, it makes a certain sense. USGS elevation models for | example are hosted on S3. Are they also on tape somewhere else? | rbanffy wrote: | > Are they also on tape somewhere else? | | I can assure you they are and that there must be a number of | copies available for use on any respectable supercomputer. | | It just may be that the canonical source of the data is, | officially, the cloud and that they release the data by | uploading it. | quercusa wrote: | I worked in optical storage in the 90s. Then and now, the storage | technology of the future! | nayuki wrote: | When the Compact Disc was released, the data capacity was way | more than typical hard drives for many years. But by the time | DVD rolled around, HDDs became denser and cheaper than optical | storage could ever be. | lehi wrote: | Page 13 prompts some questions. 128GB BDXL is positioned before | the document's publishing year of 2015, but doesn't appear to | have actually been released until 2017. The multi-TB discs | extrapolated out to present day seem to still be vaporware. Why | did advances in high-capacity bit-rot-resistant optical media | apparently stall? | lastbitwritten wrote: | Downloading 100gb games over the internet became a thing, and | h264 and h265 were efficient enough to prevent consumer video | needing anything much larger than blu-ray. | | Sony ODA is a thing, and uses 11 600gb discs in a compact | cartridge to give around 6tb per cartridge. | rbanffy wrote: | I do not expect large-capacity optical media to become | available for consumer use, but A 100GB BDXL can archive only | 6 minutes of 8K video at 60 fps from a RED, so I would assume | high-end visual production would want something better than | 100GB per disk. | throw63738 wrote: | CDRs are most reliable way to backup important documents for | several years. | jeffbee wrote: | Compared to microfilm? Surely not. | nayuki wrote: | The joke might be "several" years. | rbanffy wrote: | Clay tablets are still the gold standard for durability ;-) | alliao wrote: | I got some 25GB bluray to record family photos, I do cull rather | ruthlessly though. ___________________________________________________________________ (page generated 2021-11-14 23:00 UTC)