re: Upgrading of AIX virtual LPARS

corgano
corgano used Ask the Experts™
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Is it true that in order to upgrade the OS level of a virtual LPAR, you must first upgrade the OS version for the supporting blade?
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Commented:
In this apodictic form - no, it's not true.

I assume with "supporting blade" you mean the IVM/VIO?
Or are you talking about blade firmware?

To ensure compatibility between an installed IVM version or blade firmware version and an AIX to be installed/upgraded always consult the "System Requirements" section in the Release Notes:

http://pic.dhe.ibm.com/infocenter/aix/v6r1/index.jsp?topic=%2Fcom.ibm.aix.ntl%2Freleasenotes_kickoff.htm
http://pic.dhe.ibm.com/infocenter/aix/v7r1/index.jsp?topic=%2Fcom.ibm.aix.ntl%2Freleasenotes_kickoff.htm

But if your IVM is somewhere above 2.1 (check with "ioslevel") and if your blade is on EA350... or above (check with "lsmcode") there should be no reason to get worried, whatever new AIX version you're planning to install.

All blade/AMM firmware is available for download from IBM Fix Central, just as Updates for IVM/VIO/AIX:
http://www-933.ibm.com/support/fixcentral/

wmp

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Commented:
Thanks - my IVM/VIO version is 1.5.x, and my blades are JS220s.
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Commented:
Which is your target AIX version?

Author

Commented:
6.1 TL6. The LPARS are presently running 5.3 TL8
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Commented:
OK.

If your blade firmware is not older than EA320_046 your projected combination will run without any mandatory upgrade regarding blade firmware and VIOS/IVM.

However, VIOS 1.5 is rather old (newest is 2.2.1.4). I'd really suggest upgrading, but please be aware than you'll have to upgrade to 2.2.0 before you can proceed to 2.2.1.

Similarly, plan to upgrade the blade firmware to EA350_038 if you didn't do it already.

Lastly, why 6.1 TL6? TL7 SP4 is the newest available version of AIX 6.1, an there is already AIX 7.1 TL1 SP4, why not install one of these?

FLRT has detailed info about supported combinations and recommended upgrades:
http://www14.software.ibm.com/webapp/set2/flrt/

Good luck!

wmp

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