the intel storage manager does allow for some reconfiguration of the raid arrays , by transferring the data around. bring up the storage manager, select the array itself, then see what "modify volume" allows. it wtill says Backup all data first, and can take whole DAYS to do a reconfigure.
it is limited to what logically can be changed easily , so it is very limited.
i wouldnt touch it with a 10 foot pole, it is bad enough in say the RAID0 array that the data is split, while they could certannly SHUFFLE data around back and forth unsplitting it, it would have to complete it all and in between the whole thing would be shuffled. they do not support that operation, probably for that reason, it would be insane and take forever in time.
only way i will mess with that stuff , is via the directions Backup first, because enough can already go wrong just changing things around, and Recoveries take whole Days too.
rent a drive
shift the data that is important on to it.
remove the drive off the raid fully with the bios/software
copy the data AGAIN to the now removed raid disks
then you have it in 2 places, and if you screw up one . . . . you believe the other is still good
and make that misteak.