It feels weird to me to call optical media disks instead of discs.
The Reliability of Optical Disks
71–80 of 116 posts
Re: The Reliability of Optical Disks
#72Finally, optical disks are more expensive than HDDs - at least in cost per GB. A 4TB NAS branded HDD costs ~AU$160, which is ~4c/GB. My last BluRay purchase was for 3 x 50 spindles of 25GB disks costing AU$330, which works out to be ~9c/GB. For anybody with deep knowledge of the industry, is the price of discs an accurate reflection of costs or is it inflated by secondary factors such as attempts to make the media mo…
I thought BluRay was subject to the blank media levy in Australia, but apparently not! [0] Note that not every country got off without though - just a few lines down, the article notes the levy is present on BluRay discs in Finland, among others. As an aside, I'm of the impression not enough people know about this levy. It feels to me like the kind of thing that fouls up the "nothing to hide" arguments regarding priv…
Re: The Reliability of Optical Disks
#73Earlier quoted context omitted.
Interesting because hard disks are not a particularly reliable form of backup. As long as you have enough copies.
I know, I've had many fail on me over the years. Quantity, though, has a quality all its own!
UPD. just searched, and found, that I needed to enable periodic scrubbing in Task Scheduler: Microsoft -> Windows -> Data Integrity Scan section. I already had data integrity streams enabled (another thing you have to do manually after creating the volume).
Re: The Reliability of Optical Disks
#74I burned hundreds of discs a decade ago and read them all back perfectly, to my surprise. I strongly agree with the write-once behavior for photos and downloads. HDDs worry me in the long term because even if the platter holding the data is fine, the R/W head, mechanics, and electronics could fail, not to mention that a head crash could wipe out good data.
I'm extremely disappointed that the capacity of optical disc formats are essentially frozen, topping out at 100 or 128 GB for BD XL. They're definitely not keeping up with the continual increase in storage density and decreasing cost of hard disks and flash memory. Why are new formats not forthcoming? Where's my 300 GB Archival Disc? Where's my 1 TB holographic disc? Where's Microsoft's glass optical disc that's stable for millions of years?
I want to keep on burning optical discs and putting them in cold storage, but this gradually obsolete technology is not making a convincing case for me today.
Previously: https://news.ycombinator.com/item?id=26038893 , https://news.ycombinator.com/item?id=29221418
Re: The Reliability of Optical Disks
#75Great article discussing the benefits of optical discs and the author's own experience of using them! I burned hundreds of discs a decade ago and read them all back perfectly, to my surprise. I strongly agree with the write-once behavior for photos and downloads. HDDs worry me in the long term because even if the platter holding the data is fine, the R/W head, mechanics, and electronics could fail, not to mention tha…
If you want huge local offline storage, the solution is tapes.
Re: The Reliability of Optical Disks
#76Great article discussing the benefits of optical discs and the author's own experience of using them! I burned hundreds of discs a decade ago and read them all back perfectly, to my surprise. I strongly agree with the write-once behavior for photos and downloads. HDDs worry me in the long term because even if the platter holding the data is fine, the R/W head, mechanics, and electronics could fail, not to mention tha…
How many people are buying these 128GB discs? Probably not a whole lot and that is the reason why nobody’s going to make the investment to create bigger discs. If you want huge local offline storage, the solution is tapes.
Re: The Reliability of Optical Disks
#77Earlier quoted context omitted.
Nope! Apple—of all companies—has a support article on this: https://support.apple.com/en-us/HT201697
> Nope! https://en.m.wikipedia.org/wiki/Spelling_of_disc > the spelling disk is more popular in American English, while the spelling disc is more popular in British English
Re: The Reliability of Optical Disks
#78Ideally there should be some machine to go through old backups and upon first detection of an error, then it could regenerate the array from the remaining discs of that array.
Re: The Reliability of Optical Disks
#79Great article discussing the benefits of optical discs and the author's own experience of using them! I burned hundreds of discs a decade ago and read them all back perfectly, to my surprise. I strongly agree with the write-once behavior for photos and downloads. HDDs worry me in the long term because even if the platter holding the data is fine, the R/W head, mechanics, and electronics could fail, not to mention tha…
How many people are buying these 128GB discs? Probably not a whole lot and that is the reason why nobody’s going to make the investment to create bigger discs. If you want huge local offline storage, the solution is tapes.
Re: The Reliability of Optical Disks
#80Could do RAID 4/5/6 with Optical Disks too for additional paranoia. Ideally there should be some machine to go through old backups and upon first detection of an error, then it could regenerate the array from the remaining discs of that array.