I’ve always heard that you folks like to keep tons of backups of your stuff. I have also heard that there is this 3-2-1 rule about keeping you backups. My question is: do you follow it personally or is it something that people just tell you to follow?
3-2-1 is a suggested default backup strategy.
3 backup copies. 2 different types of media. 1 copy stored remotely.
I use a mix of backup strategies. 8-3-3 to 1-1-0, depending on what it is I backup. For example, I have two internal SSDs on my PC. Every boot a new updated versioned rsync snapshot of the primary SSD is automatically created on the secondary SSD. Only new and modified files are actually copied. Files present in the previous snapshot are simply hardlinked. So each snapshot looks like a full copy, but takes up very little storage and is very fast to make.
In addition I have two large DAS, a small NAS, a small cloud account and various external drives and devices, some stored with relatives. They are also used for backups.