From the site you provided, it sounds like they allow full restores and backups of your documents (they have set restrictions on system files). The only thing really limiting you is your internet connection speed:
How much stuff can I back up?
There are no limits on backup storage
capacity. Carbonite will back up all
the supported files on your internal
hard drive whether you have 1GB, 10GB
or more. However, users should be
aware that the speed of today's DSL
and cable Internet services will make
it very slow to back up more than,
say, a few dozen GB of data.
as for downloading...
How do I restore lost files?
Carbonite makes restoring files fast
and easy. Restore any file or folder
from your backup with just a few
clicks. Try it for yourself:
- Double-click the Carbonite Backup Drive icon on your desktop
- Locate the file or folder you wish to restore
- Right-click on the file or folder and select "Restore" to restore it to
its original location, or "Restore to"
to restore it to a new location
That's it! Your file or folder has
To learn about recovering files to a
Mac, click here.
If your computer crashes or is stolen,
you can recover lost files to a new
computer by visiting our website.
Recovering small amounts of data (a
few files here or there) will probably
take only seconds or minutes.
Restoring all of your data will take longer and depends on how much data
you have and the speed of your
Internet connection. Most DSL services
will allow you to download about
600-800 MB per hour, or roughly
14-18GB per day. For an average user,
complete data restoration is likely to
take at most a day or two.
As far as online backup goes, I'd recommend Mozy personally.