Actually, I have to say that WD Anwhere Backup is the best Backup solutuin I've used, both on Mac and previowslly on Windows. ITs now extinct software, but works flawlessly.
What it does is to make a copy of every file in your computer to a external HDD, so if crash happens, you can take this HDD and plug into any Mac or PC and have your data readable.
You dont have to select your entire computer, you may select individual folders, and of course, multiple destination too. You backup what you want to. And its INSTANT. The moment you rename a file, it gets renamed in the external HDD. Same if you delete, or create something new. Even if the HDD is sleep, the app wakes the HDD and make the changes.
so if a crash happens, its the only backup assured to have ALL your data, even the data that happened after your last time machine backup, wich takes 1 hour to run again
So....I need something like this for Mountain Lion.....once more, to use in pair with Time Machine. BTW, WD Anywhere Backup is from "Memeo" and I got it bundled with Western Digital HDD. Memeo did a special version of their software for Western Digital.