Storage optimization (mirrored without Extended Availability)
Table 1. Storage optimization (mirrored without Extended Availability)
| Physical width |
Drives per Slicestors |
Site count |
IDA configuration |
Expansion factor |
Read penalty |
| 3 |
12 |
1 or 2 |
18/13/16/18 |
1.38×2 = 2.77 |
13 |
| 3 |
24+ |
1 or 2 |
36/31/34/36 |
1.16×2 = 2.32 |
31 |
| 4 |
12 |
1 or 2 |
24/19/22/24 |
1.26×2 = 2.53 |
19 |
| 4 |
24+ |
1 or 2 |
40/35/38/40 |
1.14×2 = 2.29 |
35 |
| 5 |
12 |
1 or 2 |
30/25/28/30 |
1.20×2 = 2.40 |
25 |
| 5 |
24+ |
1 or 2 |
40/35/38/40 |
1.14×2 = 2.29 |
35 |
| 6 |
12 |
1 or 2 |
36/31/34/36 |
1.16×2 = 2.32 |
31 |
| 6 |
24+ |
1 or 2 |
36/31/34/36 |
1.16×2 = 2.32 |
31 |