IBM Power Systems E870 Technical Overview And Introduction page 173

Draft Document for Review October 14, 2014 10:19 am
LPM also needs that all systems in the LPM cluster be attached to the same SAN (when
using SAN for required common storage) which typically requires use of fibre channel
adapters.
If a single HMC is used to manage both systems in the cluster, connectivity to the HMC also
needs to be provided by an ethernet connection to each service processor.
The LAN and SAN adapters used by the partition must be assigned to a Virtual I/O server and
the partitions access to these would be by virtual lan (vlan) and virtual SCSI (vscsi)
connections within each partition to the VIOS.
Each partition to be migrated must only use virtualized I/O through a VIOS, there can be no
non-virtualized adapters assigned to such partitions.
A diagram with the minimum requirements can be seen in Figure 4-4.
Figure 4-4 Minimum Live Partition Mobility requirements
Suggested Configuration
LPM connectivity in the minimum configuration discussion is vulnerable to a number of
different hardware and firmware faults that would lead to the inability to migrate partitions.
Multiple paths to networks and SANs is therefore recommended. To accomplish this, a VIOS
server can be configured to use dual fibre channel and LAN adapters.
Dynamic Logical Partitions
PowerVM Enterprise Edition
Fibre
Channel
Adapters
Virtual I/O
Computational
Hardware
Servers
LAN
Adapters
Infrastructure
Service Processor
Dynamic Logical Partitions
Shared
PowerVM Enterprise Edition
Storage
Fibre
SAN
Channel
Switch
Adapters
LAN LAN
Switch Adapters
HMC
Service Processor
Chapter 4. Reliability, availability, and serviceability
5137ch04.fm
Virtual I/O
Computational
Servers Hardware
Infrastructure
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