@InvictusManeo @sickburnbro there is no real off-line storage anymore
well, tape, if you want to spend the time and moneys
i keep everything in ZFS mirrors, with 3-deep replication on- and off-site, where i can keep an eye on the health of the rust and rotate drives out as they reach EOL, but my storage requirements are relatively modest
that's pretty much the best one can do without going nutso
but if you're backing up a personal laptop or something similar, you have to have two disks, rust or SSD, and swap them out regularly
or stop caring about your data, which would be wildly freeing if i were capable of it