IBM Power 750 - HMC Connectivity to the POWER7+ Processor-Based Systems

Chapter 2. Architecture and technical overview 97
HMC RAID 1 support
HMCs now offer a high-availability feature. Starting from HMC 7042-CR7 RAID 1 protection
will be enabled by default. This feature enables data redundancy using two physical disk
drives.
RAID 1 is also offered on both the 7042-CR6 and the 7042-CR7 (if the feature was removed
from the initial order) as an MES upgrade option.
Blade management
The HMC gives systems administrators a tool for planning, virtualizing, deploying, and
managing IBM Power System servers.
With the introduction of HMC V7R760, the HMC can now manage IBM BladeCenter Power
Blade servers. This management includes support for dual VIOS, live partition mobility
between blades and rack servers, and management of both blades and rack servers from a
single management console.
Comparison of 7042-CR6 and 7042-CR7 HMC models
The 7042-CR6 was withdrawn from marketing in December 2012. For your reference,
Table 2-29 compares the 7042-CR6 and the 7042-CR7 HMC models.
Table 2-29 Comparison for 7042-CR6 and 7042-CR7
2.11.1 HMC connectivity to the POWER7+ processor-based systems
POWER7+ processor technology-based servers and also 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 any logical partition in a server it is possible to use a Shared Ethernet Adapter that is
configured through a Virtual I/O Server. Therefore, a partition does not require its own
physical adapter to communicate with an HMC.
Feature CR6 CR7
IBM System x model x3550 M3 x3550 M4
HMC model 7042-CR6 7042-CR7
Processor Westmere-EP Intel Xeon E5
Memory 4 GB 4 GB
DASD 500 GB 500 GB
RAID 1 Optional Default
Multitech internal modem Default Optional
USB ports Two front, four back, one internal Two front, four back, one internal
Integrated network Two on main bus + two on
expansion slot
Four 1 Gb Ethernet
I/O slots 1 PCI Express 2.0 slot 1 PCI Express 3.0 slot