I found Microsoft's backup utility to be a wolf in sheep's clothing. I
backed up my Win 2000 machine weekly using the backup utility which
produces a large file that can be copied to an external storage
device. One day my PC failed to boot and full recovery turned out to
be a joke. Fortunately I was able to retrieve and restore individual
file copies. I suggest buying a (non-Microsoft) backup utility that
will give you several options. In any event, the most important thing
is to have a written backup plan which includes periodic full backups,
may have incremental backups, and occasional off-site backup storage.
I like to schedule a full disk scan, a full anti-virus scan, and then
a full backup. Best to do this automatically at night and set a
reminder to insert new backup media before ending the day. The next
morning take a look at the logs and store your backup media in a safe
place. Tape can store a lot of data but is a PIA to recover.
You can also clone a partition using Partition Magic. The
instructions are not clear on this, but it does work, at least for
most Windows versions. Whatever you decide to try, do a recovery
test. After all, what good is a backup without decent recovery?