IBM PowerHA SystemMirror for AIX Adds Support for the New IBM Power7+ 710/730 (8231-E1D/E2D)

IBM PowerHA SystemMirror for AIX Adds Support for the New IBM Power7+ 710/730 (8231-E1D/E2D)

May 02, 2013IBM PowerHA SystemMirror for AIX* adds support for the new IBM Power7+ 710/730 (8321-E1D/E2D).

Please refer to the following information for support details.

Power 7+ 710/730 (8321-E1D/E2D)
AIX V6.1
AIX V7.1
PowerHA SystemMirror V6.1
PowerHA V6.1 TL 6
AIX V6.1 TL 8
PowerHA V6.1 TL 6
AIX V7.1 TL 2
PowerHA SystemMirror V7.1
PowerHA V7.1.2
AIX 6.1 TL 8
PowerHA V7.1.2
AIX V7.1 TL 2

Clients are advised to obtain the latest service updates for this support.

Notes:

  • Integrated Virtualization Manager (IVM) is also supported.

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

http://www.ibm.com/support/fixcentral/

For questions or concerns, please send a note to HA Feedback at:

HA Solutions Feedback/Poughkeepsie/IBM or hafeedbk@us.ibm.com

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

 

Could you please confirm if IBM PowerHA System Mirror can be configured as an active/active cluster.?

Yes, this is possible assuming you are referring to what is called mutual take-over.    

Please see the following Redbook on page 20 for the available PowerHA  cluster configurations http://www.redbooks.ibm.com/redpieces/pdfs/sg248030.pdf

 

PowerHA: PREVENT EMAIXOS (HARMAD) FROM RUNNING IN HACMP ON AIX 6.1

Many thanks to a great customer for having me add this to the blog…

We’ve recently run into this and it’s pretty much benign, but annoying.  The apar’s not new (2010), but our version of Hacmp did not have the apar in it.  Only caveat I found is that it appears this subsystem is still required for Oracle 9i (which explains why it’s not part of the standard release of hacmp).

Link:  http://www.ibm.com/support/docview.wss?uid=isg1IZ86787

IZ86787: PREVENT EMAIXOS (HARMAD) FROM RUNNING IN HACMP ON AIX 6.1

Error description

This is a code change in RSCT to stop running the emaixos

subsystem (harmad process) in PowerHA clusters on AIX 6.1.

See APAR IZ47424 for more background.

Problem summary

While existing levels of PowerHA may still be supporting

applications which are dependent on the RSCT subsystem

“emsvcs” (haemd process), its supporting subsystem “emaixos”

(harmad process) is not needed even on those clusters.

 

This harmad process has also been the source of most of the

recent incompatability issues with the latest levels of

AIX 6.1, generating error messages or core dumps which demand

attention and time from system admins even though the process

itself no longer provides useful services.