Some servers fill more than a single bay in the chassis.
As a result, they can access more ports than a single-bay server.
The maximum number of ports available to a single bay
is 8. Ports beyond the eight ports of the first server are accessed
using a server offset. The server offset is a 0 indexed value and
the additional bays are mezzanine bays.
Table 1. IBM
BladeCenter blade servers - slot offset and the adapter identifier
| Slot offset |
Adapter type |
| 0 |
Combination form factor horizontal (CFFH), Combination
form factor vertical (CFFV), and Combination I/O vertical (CIOV) |
| 1 |
CFFH, CFFV, and CIOV |
| 2 |
CFFH, CFFV, and CIOV |
| 3 |
CFFH, CFFV, and CIOV |
Table 2. IBM Flex System® compute nodes - compute
node offset and the mezzanine bay identifier
| Compute-node offset |
Mezzanine bays |
| 0 |
1 and 2 |
| 1 |
3 and 4 |
| 2 |
5 and 6 |
| 3 |
7 and 8 |