HP Onboard Administrator - Manual (Page 220)

Configuring the HP BladeSystem c7000 enclosure and enclosure devices 220
the space of two half-height server blades, the enclosure is limited to a maximum of eight full-height server
blades. Port mapping from these full-height server blades might initially appear to be different than the
half-height server blades, but they use very similar conventions.
Just as in a half-height server blade, if a blade is inserted into slot 1, it is considered device 1, but it has a
second set of ports that will also map to switches 1 and 2. With the full-height server blade, an N/N+8
scheme is used on the switches. Therefore, server blade 1 will map to ports 1 and 9 on both switches, as
N=1. For a server blade inserted into slot 2, the four ports used on switches 1 and 2 would then be 2 and 10,
as N=2.
HP ProLiant BL2x220c G1–G6 Servers