[TriLUG] need raid help!

[gregbrown at mindspring.com]

I've never messed with a raid system.  Tomorrow I have to upgrade a 7.1 system with raid to White Box EL - here's the output from df -h:

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda9             594M   71M  493M  13% /
/dev/hda1              61M  4.9M   52M   9% /boot
/dev/md0               19G  601M   17G   4% /raid
/dev/hda6             2.4G  824M  1.4G  36% /usr
/dev/hda7             2.4G   35M  2.2G   2% /usr/local
none                  188M     0  188M   0% /dev/shm


I'd like to not format anything but "/", which I can do during the install.   /raid houses a couple directories:

/home
/backups
/lost+found
/test
/var

Any pointers on how I can upgrade this system, not scramble and reformat /raid yet upgrade 7.1 to WBEL?

I'm heading to the attic to dig up my 7.1 RH book.

errr.. I love this short notice "can you help but I can't pay you" stuff!

Greg