Specifications

Chapter 2. Architecture and technical overview 107
Figure 2-39 describes the four possible Ethernet connectivity options between the HMC and
service processors.
Figure 2-39 Summary of HMC to FSP configuration option depending on number of CEC
For details about redundant HMC, see Hardware Management Console V7 Handbook,
SG24-7491.
HMC code level
The HMC code must be at V7R7.4.0 to support the Power 770 and Power 780 systems.
In a dual HMC configuration, both must be at the same version and release of the HMC.
Drawer 1
FSP Card
Enet 1
Enet 2
HUB 0
Configuration #1 – Single drawer and one HMC
Note: HUB is optional.
Customer can have a direct connection to the FSP card.
HMC #1
Enet
Drawer 1
FSP Card
Enet 1
Enet 2
HUB 0
Configuration #2 – Single drawer and two HMCs
Note: HUB is optional.
HMC #1
Enet
HUB 1HMC #2
Enet
Drawer 1
FSP Card
Enet 1
Enet 2
Configuration #3 – Multi-drawer with one HMC
HUB 0
HMC #1
Enet
Drawer 2
FSP Card
Enet 1
Enet 2
Drawer 1
FSP Card
Enet 1
Enet 2
Configuration #4 – Multi-drawer with two HMCs
Drawer 2
FSP Card
Enet 1
Enet 2
HUB 1
HMC #2
Enet
HUB 0
HMC #1
Enet