HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix? (531 Views)
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Occasional Contributor
david hood_2
Posts: 7
Registered: ‎08-28-2003
Message 1 of 5 (531 Views)

HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix?

Hi

 

I saw this today MS KB and was wondering if I should be applying this to my Hyper-V 2012 cluster.

 

I haven't seen any performance issues however, it is early days for us migrating VMs to this new cluster.

 

we have a p2000 sas san with hyper-v cluster so I am unsure if I should be applying this. 

 

Can anyone advise?

 

Thanks

 

Dave

HP Pro
PAC-MAN
Posts: 38
Registered: ‎02-12-2013
Message 2 of 5 (500 Views)

Re: HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix?

Hi David,

 

It is clear that MS recomends to change PSP only when slow performace noted during heavy workload in a direct attach SAN, Also from the article we see the issue occurs only with Round Robin. I also checked the latest firmware version TS250P002 released this month below is the revison history, but no fix related to PSP

 

The following issue was fixed in TS250P002:

  • Fixed the problem with aborting Atomic Test-andSet (ATS) commands.
  • Fixed the hanging controller issue that is seen during several iterations of the VMware Site Recovery Manager (SRM) failover and failback process.
  • Fixed the Atomic Test-and-Set logic that set the incorrect error state condition and subsequently crash the array controllers.
  • A trust failure no longer clears the partially reconstructed state of a HDD.
  • Partner Firmware Update (PFU) now functions properly when the new Management Controller (MC) version matches the old MC version.
  • All events are now properly processed by HP SIM.

If you face any performance issue we can try a different PSP. Also if you would like to update the firmware to latest please click here to download.

 

Hope this helps!

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Occasional Contributor
david hood_2
Posts: 7
Registered: ‎08-28-2003
Message 3 of 5 (491 Views)

Re: HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix?

Hi,

 

thanks for the reply. 

 

What is PSP? I assume you dont mean proilaint support pack...

 

Occasional Contributor
david hood_2
Posts: 7
Registered: ‎08-28-2003
Message 4 of 5 (490 Views)

Re: HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix?

urh my bad. path selection...

 

we are currently using round robin, which the article suggest is affected. 

 

its just a new install so not much load yet, but I would hate to go back later saying "well there is this hotfix etc etc..."

 

So i'm guessing the recommendation from HP is not to apply?

HP Pro
saiprasad
Posts: 9
Registered: ‎06-15-2009
Message 5 of 5 (481 Views)

Re: HP 2000 SAS SAN & HYPER-V and MPIO slow performance 2012 MS hotfix?

Hi David 

 

As per the KB Article ,  the solution is 

 

"To resolve this issue, obtain updated firmware from your disk vendor. "

 

On P2000 SAS Array all the firmware releases have the capability of the load balancing at SAS port level. So it may not be relevant to this array.

 

However we have a latest controller firmware released for this array on July-12 . (TS250P002 )

 

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=12...

 

 

Upgrade requirement to this version is :  " recommended " HP recommends users update to this version at their earliest convenience.

 

Thanks 

Sai 

 

 

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