Multi-bay servers and the server offset parameter

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