A strong second to that statement, for almost everyone!
But I don't agree with that one. How often to back up depends on how
much you use your computer, and what you use it for. Every day may be
great for some people, but overkill for others. I have one friend who
only turns his computer on once every week or two.
Here's my standard blurb on how often to backup:
"It takes time and effort to backup, but it also takes time and effort
to recreate lost data. If you back up daily, you should never have to
recreate more than one day's worth of last data. If weekly, there's
potentially a lot more to recreate. You should assess how much pain
and trouble you would have if you lost x days of data, and then choose
a backup frequency that doesn't involve more pain and trouble than
that you would have if you had to recreate what was lost.
Some things (photographs, for instance) can never be recreated, and
more frequent backup may be wanted for them.
At one extreme is the professional user who would likely go out of
business if his data was lost. He probably needs to back up at least
daily. At the other extreme is the kid who doesn't use his computer
except to play games. He probably needs no backup at all, since worst
case he can easily reinstall his games.
Most of us fall somewhere between those extremes, but nobody can tell
you where you fall; you need to determine that for yourself."
