TSI,
Sure but you wouldn't recreate the RAID 6. All data and volume is stored on the drives themselves. So as long as the replacement unit is on the same firmware. Simply by moving drives from one unit to another unit and just booting up. The replacement unit will read the configuration on all drives and boot up normally.
Make sure firmware is the same and each drive is number and put in it's proper drive bay and boot up. (THAT's IT)
No extra configuration needed.
If you have more questions please repost.
Jasbryan