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Author Topic: AL730 severe performance problems?  (Read 3691 times)

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rwesterik

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AL730 severe performance problems?
« on: November 14, 2011, 09:16:17 AM »
Hello everyone,

2 weeks ago we upgraded the firmware on all four 750's (8233-E8B) from AL710_114 to AL730_049.
Since that weekend, we are experiencing performance problems in several area's. It looks like networking and disk (network, NPIV and vSCSI served by dual redundant vios) is significantly slower.
Many changes were implemented in that same weekend, so we are trying to identify the root cause of these problems.
AIX versions and VIOS versions were not changed; main changes were code changes to the (EMC) storage and the IBM 750 firmware.

Did anyone upgrade from AL710 to AL730 and what are your experiences?
Did anyone upgrade to AL730_060 (new) to see what it brings??

Regards,
R. Westerik

Michael

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Re: AL730 severe performance problems?
« Reply #1 on: December 23, 2011, 09:24:37 AM »
Any further updates on this issue?

rwesterik

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Re: AL730 severe performance problems?
« Reply #2 on: December 23, 2011, 11:58:32 AM »
Not really. Most problems were identified as an EMC storage issue.
I still feel networking is still a bit slower than it used to be, but no hard data.
I begin to believe that the firmware upgrade to AL730_045 had nothing to do with it.

Michael

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Re: AL730 severe performance problems?
« Reply #3 on: December 28, 2011, 05:05:09 PM »
SAN people tell me SAN's are very complex, and sensitive to differences in components - noteable are different software levels, but also having mixed (generation) SAN storage systems.
The oldest/slowest sets the maximum level as the SAN works to develop a common protocol level supported by all parts - makes me think of grammar school math when we had to determine the LCD - Lowest Common Denominator.