Server :: Add New HDD (with Previous Data) In CentOS?

this is my fstab::

Code:

LABEL=/ / ext3 defaults 1 1
LABEL=/backup /backup ext3 defaults 1 2
LABEL=/boot /boot ext3 defaults 1 2

[code]....

Now while installing, I had 2 Hdds. at the time of partitioning, i used both as separate Hdd and made a /backup. I used that for my backups. That was RH9. Now I want to install Centos 5. and i wish to keep the /backup as it was. (as my cron scripts and others are written in this way)I wish that it will be mounted at the time of boot. And moreover, I can add a new hdd (using the manuals) but I need to keep the data.

Also the second question:: I have implemented a WiFi hotspot in a hotel with a Cisco WLC and several Cisco APs. Now I wish to restrict and log on access for both wifi and wired LAN using user names. Raduis is okey... with a mysql password database... I found a thing named hotex hotspot billing. But that's expensive. Also FCS's module is expensive too. I do not need billing, just access control. Any ideas on this?? It must be a linux based kind of baremetal package...