It depends on whether the motherboard or RAID card you're using has 5 SATA connectors on it (I'm assuming you're referring to SATA and not IDE). If so, then most RAID solutions I know can support multiple RAID volumes with different organizations.
waiting on my msi eclipse so sata slots check and as for the redundancy i know the vraptors will prolly outlive me but ive been pwned by my os hdd one time to many and rebuilding a terra is dang long. thanks for the input very helpful