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Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

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Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#81

Post by em500 »

OptionX wrote: post #20

What would one use as a media for long-long-term storage, taking only into account the resisiliance of the ability to read the data from it? For example if you wanted to store data in a time capsule for like 100 or 200 and you where ganrateed the people on the other side had a reader capable of reading whatever media, and whatever format you chose.

As others have noted, the answer depend a lot on whether your data size is in kilobytes, megabytes, gigabytes or terrabytes. For text (kilobytes) there are a lot more options that for video (gigabytes).

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#82

Post by 6stringmerc »

“Handing someone a demo CD is like saying to them, Hey, you throw this away.”

(Can’t recall the comedian, could be Dimitri Martin)

It’s funny but burned CDs are a great handout for me. I can see through DistroKid that some people loaded them into iTunes and I got a small match but if money for it. Considering how cheap they are and “put in walk away repeat” the process is, I’m still happy to crank them out now and again.

Plus! I have CD labels so they have personality and flair. Also they fit a 40-60 minute DJ set perfectly. Burn, pop in the car, party on the go baby.

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#83

Post by Evidlo »

grishka wrote: post #58
darkwater wrote: post #45

Earlier quoted context omitted.

Same storage conditions here, probably never over 30C though, but I really never cared for its storage either. Give a try to ddrescue, it's pretty straightforward to use, I just ran it with defaults and it worked pretty well, but it has a ton of parameters if you want. Now I have stored the whole disk image in the cloud (BackBlaze), let see in 2043 if I can still access it!

The problem with cloud storage is that it's a needy thing. You have to pay for it in periodic payments the whole time it exists. And it's also controlled by someone else. I do really wish there to be a type of storage medium that I could record, store somewhere, and forget about. And then when I need it years later, it would still be perfectly readable. Optical discs are indeed kinda that, but their reliability is hi…

Get DVD-Rs with gold foil. "Archival grade"

https://www.amazon.com/Verbatim-DVD-R-4-7GB-UltraLife-Archiv...

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#85

Post by ruslan »

bibaheu wrote: post #79
neilv wrote: post #16

When I was using dual-layer DVD+R blanks for off-site backups, the folk wisdom on blanks I heard from someone who burnt discs a lot was: to get a particular type and brand, and make sure the unit had been manufactured in Singapore. The country/factory of manufacture was indicated on the packaging, but the SKU and UPC didn't reflect that. More recently, I looked into re-adding optical disks (this time, M-Disc at BD ca…

Hi, I do the BD M-Dics at home, with Linux, with 0 problems. What problems did you get?

I do backups of my home servers to BD-RE discs (BDXL 100GB) once a week from ZFS storage. The only problem is poor drive quality - for past five years I changed two dives (Asus branded, all different models). Seems they are not made for regular writes. So, the weak point is not the media itself but availability of dives which may just be missing in 20 years perspective.

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#86

Post by iicc »

darkwater wrote: post #29

Totally anecdotal but just a month ago I opened a box from my last moving (ended 4 years ago...) and I found a CD-RW labeled "Backup 2001", which survived 5-6 relocations, even an international one. Well, I put it into an USB DVD player I have aaaand, it starts spinning and spinning and spinning, and nothing shows up in Nautilus. Looking at dmesg I see a few I/O errors on the device. Then, I try ddrescue [1], start e…

>Outlook Express format

http://fileformats.archiveteam.org/wiki/Outlook_Express_Data...

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#87

Post by FroshKiller »

6stringmerc wrote: post #82

“Handing someone a demo CD is like saying to them, Hey, you throw this away.” (Can’t recall the comedian, could be Dimitri Martin) It’s funny but burned CDs are a great handout for me. I can see through DistroKid that some people loaded them into iTunes and I got a small match but if money for it. Considering how cheap they are and “put in walk away repeat” the process is, I’m still happy to crank them out now and ag…

It was Mitch Hedberg joking about getting a receipt for buying a doughnut.

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#88

Post by danielheath »

grishka wrote: post #58
darkwater wrote: post #45

Earlier quoted context omitted.

Same storage conditions here, probably never over 30C though, but I really never cared for its storage either. Give a try to ddrescue, it's pretty straightforward to use, I just ran it with defaults and it worked pretty well, but it has a ton of parameters if you want. Now I have stored the whole disk image in the cloud (BackBlaze), let see in 2043 if I can still access it!

The problem with cloud storage is that it's a needy thing. You have to pay for it in periodic payments the whole time it exists. And it's also controlled by someone else. I do really wish there to be a type of storage medium that I could record, store somewhere, and forget about. And then when I need it years later, it would still be perfectly readable. Optical discs are indeed kinda that, but their reliability is hi…

A desktop CNC engraver can be had for $500. Stones are cheap.

Archaeologists have read engraved stones after thousands of years of neglect!

Re: Longevity of Recordable CDs, DVDs and Blu-Rays (2020)

#89

Post by RalfWausE »

After reviving a PC i had in the late 90s a couple of weeks ago i investigated this big box of CD-Rs standing besides it (in an unisolated attic in germany... so temperatures from about -5 °C to >35 °C), most of the CDs were burnt in a period from around '96 - 2005, many ... ehm... "off site backups" of games and other software but also personal files.

What can i say... every CD i put in the drive worked flawlessly. I think it sometimes comes down to pure dumb luck.

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