Does Time Machine backup an entire disk image?

Currently I am on Tiger. I have Leopard in my drawer and will install it when 10.5.1 is released.
I have a question about Time machine.
Currently I use Deja Vu to backup my entire startup disk Disk-A to another disk-B. I can swap these over as startup's if a problem occurs.
Can I do the same thing with time machine?
Thanks,
Steve.

I'm assuming that your disk B is a bootable clone of disk A. If that's the case then, no, Time Machine doesn't do that. However, you can use your Leopard install disk to restore a bootable version of your system and all your files from Time Machine's backups. Time Machine has the advantage of being able to do that type of restore from previous dates and times, unlike a single clone. You can also use Time Machine to restore specific files that you have deleted, accidentally or otherwise, from your main drive.
I use both a bootable clone and Time Machine and consider them complementary backup solutions. BTW, 10.5.1 was released on the 15th.

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