You need three copies of your data: the working copy, the nightly backup, and the offsite backup in case of natural disaster. I physically mailed a drive to my father in another state in case my building catches fire. You can also use a safe deposit box or give a drive to a friend who is geologically separated from your location.
Notice: recent info suggests that SSDs suffer bit-rot when not powered. Not enough confirmed info at this time for me to go into it further, but please rewrite important data from time to time.
You need three copies of your data: the working copy, the nightly backup, and the offsite backup in case of natural disaster. I physically mailed a drive to my father in another state in case my building catches fire. You can also use a safe deposit box or give a drive to a friend who is geologically separated from your location.
Notice: recent info suggests that SSDs suffer bit-rot when not powered. Not enough confirmed info at this time for me to go into it further, but please rewrite important data from time to time.