NOTHING I have that is irreplaceable is on less than 2 drives nor are they ever connected at the same time. You’re just asking to lose files if you only save them on one drive.
The 2 stands for on 2 different mediums. So HDD and tape for instance. Or HDD and SSD. Or SSD and DVDs. Whatever combo you choose that fits your needs. This (minimizes) the chance of loss of both.
NOTHING I have that is irreplaceable is on less than 2 drives nor are they ever connected at the same time. You’re just asking to lose files if you only save them on one drive.
If you have your data in one location, you have your data in zero locations.
The 3 2 1 of data retention is important
3 copies of your data
2 local
1 off-site
The 2 stands for on 2 different mediums. So HDD and tape for instance. Or HDD and SSD. Or SSD and DVDs. Whatever combo you choose that fits your needs. This (minimizes) the chance of loss of both.