It’s basically the good old 3-2-1 backup rule: Three copies of your data (your production data and two backups) on two different media, with one copy off-site.
as an archivist 3-2-2-1 is better. The second 2 indicates that the two backups should be on two different brands of media in case of a catastrophic design flaw.
cpach|2 years ago
It’s basically the good old 3-2-1 backup rule: Three copies of your data (your production data and two backups) on two different media, with one copy off-site.
balder1991|2 years ago
brimwats|2 years ago