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HACMP supports Live Partition Mobility on IBM System p servers

Document Author:

Michael E Herrera

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Advanced Technical Sales

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Abstract: HACMP supports Live Partition Mobility on IBM System p servers

HACMP supports Live Partition Mobility on IBM System p servers

March 31, 2008

IBM* High Availability Cluster Multiprocessing (HACMP*) for AIX*, Version 5.3 and 5.4.1 extends support to include Live Partition Mobility on all HACMP supported IBM System p* POWER6* processor-based servers. Please refer to the following table for support details.

Note: All listed levels are minimum.
Live Partition
AIX V5.3
AIX V6.1
HACMP # IZ07791
HACMP # IZ07791
HACMP 5.4.1
HACMP # IZ02620
HACMP #IZ02620

  • Firmware Level: 01EM320_40 (or higher)
  • VIOS Level: (w/Interim Fix 071116)
  • HMC Level:

With the requisite levels of software and firmware installed on the source and destination POWER6 servers, the Live Partition Mobility feature can be used to migrate an LPAR running as an HACMP node without affecting the state or operation of the HACMP cluster, provided the HACMP cluster is configured to use standard (that is, default) heartbeat parameters. In that case, the effect on the application servers running under HACMP control is a brief suspension of operations during the migration. Neither HACMP nor the application servers will have to be restarted.

For those HACMP clusters configured to use fast heartbeating, and/or application monitoring with short checking intervals, IBM recommends customer testing to validate that the period of suspension during Live Partition Mobility will not cause unwanted cluster events. Another way to greatly minimize the chance of unwanted cluster events is to simply stop the cluster utilizing the "Unmanage" option on the cluster node in which an LPM is going to be performed on. Then upon successful completion of the move, simply restart cluster services again.

See the note below for information on how to properly configure POWER6 servers for Live Partition Mobility, and restrictions on its use.

Note: Live Partition Mobility Information:

Service can be obtained from the IBM Electronic Fix Distribution site at:

For questions or concerns, please send a note to HA Feedback at:
HA Solutions Feedback/Poughkeepsie/IBM or

* Trademark or registered trademark of International Business Machines Corporation.
Other company, product, and service names may be trademarks or service marks of others.


Hardware; Software


Installation and Migration


IBM System p Family




hacmp, partition, mobility, LPM

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