Chapter 2. Architecture and technical overview
103
Figure 2-37 shows one possible highly available HMC configuration that is managing two
servers. Each HMC is connected to one FSP port of all managed servers.
Figure 2-37 Highly available HMC and network architecture
For simplicity, only hardware management networks (LAN1 and LAN2) are highly available
(Figure 2-37). However, the management network (LAN3) can be made highly available by
using a similar concept and adding more Ethernet adapters to the LPARs and HMCs.
Both HMCs must be on a separate virtual local area network (VLAN) to protect from any
network contention. Each HMC can be a DHCP server for its VLAN.
For details about redundant HMC, see Power Systems HMC Implementation and Usage
Guide, SG24-7491 (previous edition was named Hardware Management Console V7
Handbook, SG24-7491).
If you want to migrate an LPAR from a POWER6 processor-based server onto a
processor-based server using PowerVM Live Partition Mobility, consider how the source
server is managed. If the source server is managed by one HMC and the destination server is
managed by another HMC, ensure that the HMC that is managing the POWER6
processor-based server is at a minimum level of V7R7.3.5 or later, and that the HMC that is
managing the processor-based server is at minimum level of V7R7.6.0 or later.
2.12 Operating system support
The Power 720 and Power 740 servers support the following operating systems:
AIX
IBM i
Linux
In addition, the Virtual I/O Server can be installed in special partitions that provide support to
the other operating systems for using features such as virtualized I/O devices, PowerVM Live
Partition Mobility, or PowerVM Active Memory Sharing.
HMC1
HMC2
System A
System B
1
2
FSP
1
2
FSP
LAN 1
LAN 2
LPAR A1
LPAR A2
LPAR A3
LPAR B1
LPAR B2
LPAR B3
et
h0
et
h1
et
h0
et
h1
LAN1 –
Hardware management network for
first
FSP
ports
(private)
LAN2 –
Hardware management network for
second FSP ports (private), separate
network hardware from LAN1
LAN3 –
Open network for HMC access and
dLPAR operations
LAN3 – Open network
