Specifications

Chapter 2. Architecture and technical overview 65
Draft Document for Review May 12, 2014 12:46 pm 5102ch02.fm
Table 2-20 Comparison between 7042-CR7 and 7042-CR8
2.9.3 HMC connectivity to the POWER8 processor-based systems
POWER8 processor-based servers, and their predecessor systems, that are managed by an
HMC require Ethernet connectivity between the HMC and the server’s service processor. In
addition, if dynamic LPAR, Live Partition Mobility, or PowerVM Active Memory Sharing
operations are required on the managed partitions, Ethernet connectivity is needed between
these partitions and the HMC. A minimum of two Ethernet ports are needed on the HMC to
provide such connectivity.
For the HMC to communicate properly with the managed server, eth0 of the HMC must be
connected to either the HMC1 or HMC2 ports of the managed server, although other network
configurations are possible. You may attach a second HMC to the remaining HMC port of the
server for redundancy. The two HMC ports must be addressed by two separate subnets.
Figure 2-25 on page 66 shows a simple network configuration to enable the connection from
the HMC to the server and to allow for dynamic LPAR operations. For more details about
HMC and the possible network connections, see IBM Power Systems HMC Implementation
and Usage Guide, SG24-7491.
Feature CR7 CR8
IBM System x® model x3550 M4 x3550 M4
HMC model 7042-CR7 7042-CR8
Processor Intel Xeon E5 Intel Xeon E5
Memory 4 GB 16 GB
DASD 500 GB 500 GB
RAID 1 Default Default
Multitech internal modem Optional None
USB ports Two front, four back, one internal Two front, four back, one internal
Integrated network Four 1 Gb Ethernet Four 1 Gb Ethernet
I/O slots 1 PCI Express 3.0 slot 1 PCI Express 3.0 slot