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тАО06-13-2002 12:26 AM
тАО06-13-2002 12:26 AM
High Qlen on VA7400 again
Now, a write-intensive application is taking my LUN to a VERY HIGH Qlen again: >50000!!!
VA7400 array is connected to two Brocade switches and host is connected to the same switches.
I have already adopted all suggestions from HP (us Controller1 as primary path for LUNs in Redundancy Group 1 and viceversa, increase Queue Depth using sysctl, etc.)
How can I alleviate this problem?
Thanks in advance
Mimmo
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тАО06-13-2002 05:42 AM
тАО06-13-2002 05:42 AM
Re: High Qlen on VA7400 again
Could you please provide some specific information on Command View SDM revision, VA7400 firmware revision, and switch firmware revision. There are some specific changes made in the VA7xxx firmware to address performance related issues. There are also some patches available to this regard.
Thanks,
Dave
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тАО06-14-2002 12:11 AM
тАО06-14-2002 12:11 AM
Re: High Qlen on VA7400 again
VA7400 Product Revision: HP13
Brocade Fabric OS: a2.4.1
Problem seems alleviated reversing primary path and alternathe path in volume group definition.
Thanks
Domenico
P.S. Sorry for my bad english!
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тАО06-14-2002 06:02 AM
тАО06-14-2002 06:02 AM
Re: High Qlen on VA7400 again
There is a new firmware that could solve some performance issue, if all is well configure
bye
marino
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тАО06-14-2002 06:14 AM
тАО06-14-2002 06:14 AM
Re: High Qlen on VA7400 again
As mentioned by Marino, there is a new firmware available for the VA7xxx. I believe the latest release is HP16. In order to get there, you'll need to upgrade Command View SDM to version 1.04. I believe the firmware you have for the Brocade is the latest. There are some significant performance enhancements included in HP14, however, that was a factory only install. HP15 also included some additional enhancements. I'm not sure of what's included in HP16 but I beleieve it should be available. Contact your local HP to schedule an upgrade.
HTH,
Dave
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тАО06-14-2002 12:01 PM
тАО06-14-2002 12:01 PM