5137ch04.fm
Draft Document for Review October 14, 2014 10:19 am
160
IBM Power Systems E870 and E880 Technical Overview and Introduction
Externally to each system, redundant hardware management consoles (HMCS) can be
utilized for greater availability. There can also be options to maintain redundancy in SANs and
local network hardware. A diagram with the suggested scenario can be seen in Figure 4-5 on
page 160.
Figure 4-5 Redundant infrastructure for LPM
PCIe slot selection
POWER8 processor has PCIe controllers integrated on the chip allowing for a single
processor to have 2 or more PCIe gen3 slots directly attached to it. In case of a complete
processor failure, these slots might become unusable.
Once this affects availability of PCIe slots, it must be taken into consideration while selecting
the slot placement for the adapters on the VIrtual I/O Servers.
For scale-out class systems, each processor module directly controls two 16 lane (x16) PCIe
slots and additional I/O capabilities are provided by x8 connections to a PCIe switch
integrated in the processor board. All the slots connected to the PCIe switch belong to a
single processor.
Infrastructure
Infrastructure
Computational
Hardware
Virtual I/O
Servers
Fibre
Channel
Adapters
LAN
Adapters
PowerVM Enterprise Edition
Dynamic Logical Partitions
Service Processor
Fibre
Channel
Adapters
LAN
Adapters
Virtual I/O
Servers
Computational
Hardware
PowerVM Enterprise Edition
Dynamic Logical Partitions
Service Processor
HMC
HMC
SAN
Switch
SAN
Switch
LAN
Switch
LAN
Switch