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76 IBM BladeCenter JS23 and JS43 Implementation Guide

required If you desire to use advanced operations available under PowerVM

Enterprise Edition, such as Live Partition Mobility (LPM) and Active Memory™

Sharing (AMS).

The decision regarding whether to use a shared processor pool or dedicated

processors should be made prior to configuring an LPAR. Changing from one

mode to the other with the IVM UI requires the deletion of the LPAR and the

creation of a new one, the VIOS CLI can use the chsyscfg command. The

chsyscfg command can be used to switch when the partition is in the Not

Activated state.

Network

EtherChannel configuration (if used), as well as BladeCenter switch module type

and bay location, require pre-planning. HEA ports cannot be mixed with the

PCI-X adapter ports available on the CFFh combo cards to create an

EtherChannel device. The use of the HEA ports to create an EtherChannel will

require the use of pass -thru modules, the Intelligent Copper Pass-thru Module

for IBM BladeCenter in switch module bay one to retain Serial over LAN (SOL)

capability, or Ethernet modules that provide for logical grouping of switches.

Network Interface Backup or NIB, can mix HEA and other adapter ports types

4.1.2 Internal and external storage considerations

Different types of storage can be used with the Virtual I/O Server. Each type of

storage offers advantages and disadvantages. This section explains possible

configuration scenarios with the IBM BladeCenter JS23 or JS43. For information

about supported I/O expansion cards, along with their feature codes and option

part numbers, refer to 3.8.2, “I/O Expansion Cards” on page 54.

There are currently two form factor types of I/O expansion cards supported in the

IBM BladeCenter JS23 or JS43. They are:

򐂰 Combinational I/O vertical (CIOv) I/O expansion cards

Note: The HEA adapter implementation on IBM BladeCenter JS23 or JS43

blades will always show a link status of Up, as shown using the entstat

command:

$ entstat -all ent1 |grep Link

Logical Port Link State: Up

Physical Port Link State: Up

When an HEA adapter is used as primary in a network interface backup (NIB)

configuration, the link state cannot be used as the failover determination. NIB

should be set up using the

ping option.

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