Ouch! My head hurts reading all the acronyms, tech jargon, etc. ?
Is there an simple off-the-shelf buy X and run Time Machine or some other app simple solution?
Yes.
- Buy an external portable drive.
- Run Time Machine.
- Done.
However, where you store that drive is the issue, because while you have that backup with you in case of an emergency, if the disaster that wipes out your Mac also happens to wipe out your portable drive, you're in the same situation of having nothing to restore from.
In short, what we are talking about is having a backup strategy to your backup strategy. Always have a secondary plan available (or at least think about it) should your main backup strategy also fails.
BL.