this post was submitted on 23 Nov 2023
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Data Hoarder

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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.

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I have recently thought about burning some data to Blu-ray and therefore looked for some cheap blank discs. To my surprise, higher density Blu-rays seem to be much more expensive than lower density ones. In my country (Germany) for example, I could buy a 25 GB BD for 0,44€. A 100 GB BD would cost me 8,77€! At that price, it would be more efficient to store 100 GB on four 25 GB discs instead of one 100 GB disc (1,76€ vs. 8,77€). Sure, if it is one file I would have to split it first and combine it again when I want to access the data, but that effort seems to be worth it.

Why are high capacity Blu-rays so much more expensive, especially compared to HDDs or SSDs where the price per GB/TB usually drops with higher capacity?

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[–] [email protected] 2 points 10 months ago (9 children)

Optical media are crazy expensive in Germany, especially the multi-layer ones. They are also getting harder and harder to come by, and horrible quality. Buy from Japan: they have a larger selection (though it’s also been getting less, recently), at lower prices (even after adding delivery and tax), and better quality. Try to get the ones made in Japan, the Indian stuff can also be sketchy (MAGBA*, VERBATIMf) though for some reason not as terrible as the crap being sold in Germany. Good choices in my experience are Panasonic for 25 and 50 GB (MEI.RA1, MEI.RB1) and the quad layer SONY.NQ1 (128 GB). They’re super easy to order from Amazon.co.jp, they’ll calculate the total price for you including anything payable at customs, so no bad awakening due to having to pay extra once it arrives. Not all JP sellers will ship to Germany, but most do.

I've done this for years now and can't recommend it enough.

Good luck!

[–] [email protected] 1 points 10 months ago (1 children)
[–] [email protected] 1 points 10 months ago

Yes, quad layer.

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