10-23-2022, 05:55 PM 
		
	
	
		You can technically remove the last drive. But this will mean no redundancy. There is no way to change the number of drives in existing RAID from 4 to 3. You will need to delete and recreate a RAID. 
You can then have RAID5 on first 3 drives. The last drive would have basic mode - running on its own.
I hope this helps.
	
	
	
	
You can then have RAID5 on first 3 drives. The last drive would have basic mode - running on its own.
I hope this helps.

 
 

 

