Changes to 16-SEP-2012: RAID Allocation Guide between r1 and r2

& A    & B    & Redundancy & Space Overhead & --> &| A   | B    | Redundancy | Space Overhead |%
| 0    | 0    | 1          | 0 %            |

Legend

     Only in r1
     Only in r2
     -->      Modified slightly between r1 and r2