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 --------------------------------------------------------------------- To unsubscribe, e-mail: trinity-users-unsubscribe@xxxxxxxxxxxxxxxxxxxxxxxxxx For additional commands, e-mail: trinity-users-help@xxxxxxxxxxxxxxxxxxxxxxxxxx Read list messages on the web archive: http://trinity-users.pearsoncomputing.net/ Please remember not to top-post: http://trinity.pearsoncomputing.net/mailing_lists/#top-posting