Thomas Staton asks about backup strategies:
Since I have two backup drives, should I use Time Machine on both, or use cloning hardware on one and Time Machine on the other?
I’m a great fan of belt, suspenders, duct tape, and a spare belt. Time Machine and clones have different purposes, though you can use them to the same end in the right case. If you have a non-recoverable drive failure, you can either use a clone or a Time Machine drive to restore to the last backed-up point.
Time Machine’s advantage is twofold in the right case. First, it’s routinely backing up, so even as you work, some files are being written in backup form. Second, it has archives of previous versions of the same files.
Read more here:: How to set up a redundant backup system