Restore strategy is more important than backup strategy
Testing backup plans would not be a bad idea. If we don't test backups, we don't have them. We must recheck backup/restore plans monthly, quarterly or yearly
3-2-1 Rule
3 means: having at least 3 total copies of data
- local machine
- external hard drive/removeable disk device
- cloud storage
2 means: keep the backed-up data on 2 different storage types
- local machine
- cloud
1 means: having at least 1 copy offsite
Even if you have two copies on two separate storage types but both are stored onsite,
a local disaster could wipe out both of them.
Keep a third copy in an offsite location, like the cloud.
Mindset
3-2-1 Rule
3 means: having at least 3 total copies of data
2 means: keep the backed-up data on 2 different storage types
1 means: having at least 1 copy offsite