Also, number of arrays is limited to two, so creating single drive arrays is no option.
Furthermore I couldn't find any utility to manage arrays within the OS, so even when using controller raid, drive failure would probably mean reboot, in order to assign new drive to the array using...
did it work out for you?
I've got a netcell 5port controller which I just plugged into my linux server with the same intention, accessing single drives for building software raid.
Im using the pata_netcell driver included in the kernel (2.6.28) and it works fine for arrays which are created...