In my case I manage my 3ware hardware RAID arrays from a Knoppix rescue system.
You need to begin by loading the appropriate kernel module:
# modprobe 3w-9xxx
Then you can then use the command line interface tool to manage your array:
# cd /usr/local/sbin # ./twi-xxx-amd64
For further reference on the 3ware command cli tool see the user guides: