JSP - Johnson's Server Project
SERVER - Add a Hard Drive

Just add a new drive with a FreeBSD File System

run /stand/sysinstall
Do Post Install Configuration

Pick Disk Slice Editor
Create a Slice
W (Write)
Leave Boot Reord untouched
Q (Quit)

Pick Disk Label Editor
Create Label (A for whole partition, C for partial)
Select FS for a File System
Label Mount Point (ex /data)
W - Write