Changes to 16-SEP-2012: RAID Allocation Guide between r3 and r4

%| A   | B    | Redundancy | Space Overhead |% --> %| A   | B    | Redundancy        | Space Overhead                              |%
| 0    | 0    | 1          | 0 %            | --> | 0    | 0    | 1                 | 0 %                                         |
| 0    | 1    | ''N'' (7)         | (''N' - 1) / ''N'' (86%)                    |
| 0    | 5    | 2                 | 1 / ''N'' (14%)                             |

Legend

     Only in r3
     Only in r4
     -->      Modified slightly between r3 and r4