Hello,


I'm looking way to backup all my data on one of my scsi harddrive to other scsi drive at every night, what is the best method to do that

Dan

That depends on many factors, just a
few examples:

Does the machine need to be up 24/7?
Does any kind of service try to write to the
disk that you want to backup at any time
it fancies?


Cheers,
Tink

The system will be up 24/7 with web and mysql and some other applications


I want save my data in case i delete something or hard drive dies so that i can restore the data

Dan

In that case the process will be "non-trivial" :)

I'd suggest the following procedure:

Take a full copy of the drive while the machine is
off-line (e.g. using a boot-cd) so you could just
swap the HDD in case of a physcial failure.

As for the ongoing work:

You'll have to set-up two jobs (possibly both
triggered by the same cron-event). One will be
to mysqldump the database and then copy that
file to the other drive (you may want to consider
version-keeping, like a weekly roll-over, using
e.g. the rsync backup-script). The other should
be an rsync of your www-directory which should
be no big deal at any given time.


Cheers,
Tink