>>You said you have 4 drives running a RAID 5. Did you configure them as RAID 5 with some utility or were you thinking of doing that within Linux?
I configured the RAID with a terminal utility. The utility (on the controller) allowed me to create and Format the RAID. Thats why im so confused. Linux should see it. Unfortunatly there is almost no information about the CMD 5640 on the web and nothing about it in reguards to getting it to cooperate w/ linux