How do I setup automounter to mount my NAS backup share?

RedHat, as well as other distributions, contain the AutoFS
utility. This will allow you to mount your NAS share
automatically in a directory. There are only a couple things that
you need to do to have this setup correctly. First, you will need
to make sure that autofs is starting on boot. On RedHat, do the
following:

chkconfig autofs on

Now you will need to configure your filesystem to mount
automatically. This is easily done with the following
steps. You will need to first decide on a directory that you will
be using for these automatic mounts. For this example, we will
use /backup. Edit /etc/auto.master with your favorite text
editor, and add this line:

/backup /etc/auto.backup —timeout=30

Once that has been completed, save the file, and open a new file in /etc called “auto.backup”. In this file, the only line you will need is as follows:

smb -fstype=smbfs,username=XXXXXX,password=YYYYYY ://10.10.10.10/XXXXXX

All you need to do is substitue your username for XXXXXX, and your
password for YYYYYY. You will also need to use the IP address of
your NAS server. Now just start it manually:

root@box [/]# /etc/init.d/autofs start

Starting
automount:
[ OK ]

root@box [/]#

If you have followed the steps above, and your username and password is
correct, you are done. You can change directories to /backup/smb,
and you will see the files located on your NAS share.