That's "RAID 6" not RAID with 6 drives.    "Multiple RAID-6" sets is what  I was talking about.  Each physical array can only be one RAID level, using all the disks available.   A "pool" can have up to 8 physical members in it.   The total space of all members will be available to volumes in that pool.   You can have up to 4 pools per group.  You can't split a physical array member across multiple pools.  
Looking at the the documentation for the PS6100E.  I will use RAID 6.  The layout table starts at six drives.  Is that the minimum?  Can you do it with four drives in an EQL?  Thanks.
How many drives does it take to make a RAID 6 in a Dell Equallogic PS6100E?