Large filesystems help/ideas

[Matias Surdi]

Hi,
I'm implementing a backup solution at work.We've bought a x86 server 
with two hardware raid 5 with for a total storage capacity of about 7Tb.

For the software we are using for backups, the ideal scenario would be 
to have just one "big disk" so that no space problems would appear.

I've tried to install FreeBSD 7 with no success, as it seems... the 
sysinstall tool doesn't support such big slices.

I've read about the "Large Data Storage on FreeBSD" but I'm still confused.

I've also thought on using slices of 1Tb, and join all them using vinum. 
What do you think about this last option?

Thanks a lot for your help.