On Thursday 09 July 2020 12:54:26 am deloptes wrote:
> Michele Calgaro via trinity-users wrote:
> > Harddisks do fail from time to time, that is why I suggested you could
> > use more than one. The likelihood of 2 or more HD failing at the same
> > time + your main HD to fail at the same time as well is super low.
> > CD/DVD/BD disks could potentially fail too, get scratched, broken.....
>
> I can second that. It seems it depends on the materials use for producing
> them.
> Last year I checked many backup cds from the past before throwing away.
> Some written in 2002 were working and most written in 2007 were failing.
> The hard drives written back then still work.

> And today we have also SSDs - I don't know how long they can reliably store
> information without being powered. Does someone has reference?

Heresay with no proof, but, I've heard SSD's:

- data is good for about 6 months without power.
- data is dead after about 1 year without power.

Read it on the internets...

Best,
Michael