zlacker

>>eloran+(OP)
A couple years ago Panasonic and Sony partnered with the Japanese government to come up with an (alternative) standard that's similar to m-disc in its properties.

The standard that they came up with is called "Archival Disc" (AD) [1] and they fulfill the requirements of 100 years (lab tested and verified) data retention. The ODA units, however, cost over 8500$ last time I checked.

As far as I know you can order them from the Panasonic Japan website and not anywhere outside Japan, but this standard has huge potential in my opinion (when compared to the absurdly overpromised mdisc, for example).

Data retention rates matter, always have an optical and a spinning HDD backup. SSDs are not guaranteed to keep data longer than 30-90 days without electricity.

[1] https://en.m.wikipedia.org/wiki/Archival_Disc

>>thrwwy+r31
> SSDs are not guaranteed to keep data longer than 30-90 days without electricity.

SSD retention claims vary depending on the drive; and it's a trade-off between speed, durability, total writes, etc.

At reasonable room temperatures, powered-off SSDs will keep data for years.

>>Symbio+f71
Well, most vendors argue with losses of around 1-2% of data per year if you read their specifications.

Losing a single bit is unacceptable for archival purposes, that's why I mentioned the importance of optical and magnetic backups as a redundancy.

>>thrwwy+f81
Can you not store the data in a proper format with error correction? Then you can reconstruct the original data completely as long as a certain percentage of data is still undamaged.