how to use your 2nd HDD?

my server has 2 HDD, but my 2nd HDD is there doing nothing but collecting dust there.

if it's you, what do you use for the 2nd HDD?

configure it to backup? but how to do it with DA? prowebuk suggested use symlink:

http://www.directadmin.com/forum/showthread.php?s=&threadid=3623

this is not really easy for me, is there any other suggestion?

like, how do i setup users on 2nd HDD?

Depending on the sizes, personally I would put Operating system and all software on one and only user data on the other.
You can also put users on both by changing the directadmin conf and change the users home directory from /home to the location on the second hard drive I beleive. I would search the forums to confirm this is possible though