3 total copies of your data, including your original or “production” data
2 different forms of media
1 off-site copy
Proton Drive can be a decent off-site backup, but it would be a good idea to make a separate backup of your data on a different form of media like an external hard drive, just in case Proton Drive goes down, or the data there gets corrupted and you need to restore a known good version.
The common wisdom about backups is the 3-2-1 backup strategy, which recommends:
Proton Drive can be a decent off-site backup, but it would be a good idea to make a separate backup of your data on a different form of media like an external hard drive, just in case Proton Drive goes down, or the data there gets corrupted and you need to restore a known good version.
Since my current data store isn’t massive at the moment, if I have a fire (and I’m home), part of my plan is to grab my NAS on the way out.
But I still have off-site backup (and a local duplicate of my data).
Just always keep in mind that you might not be home and that this might not be your priority in the heat of the moment (no pun intended).