Quote:
Originally Posted by odamizu
Thank you, asleyam! If I already have Time Machine backup to an external drive, do I really need a clone backup as well? I understand the Time Machine backup is not bootable? but is that the only issue?
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If you want to run OSX from an external drive you need a clone of the internal mackintoshHD. One of my older iMacs has a dead internal drive, but the iMac itself is still functional because it boots directly into the external clone and treats it as if it were the internal one.
So basically, if you only need to backup files and restore from time machine, you don't need to clone. But if you want to boot into and work from an external image of your internal drive, then you will need to create a bootable clone.
My backup method is to make daily time machine backups of my internal drive and the 2tb samsung T5 ssd that stores my non system files, to a 3tb hard drive. Using CCC, twice a week I make incremental clones of my internal drive and all my external ssds.
I consider Time machine and CCC to be complementary.