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тАО05-25-2011 12:28 PM
тАО05-25-2011 12:28 PM
Redundancy Failure testing EVA 4400 controllers
To test controller redundancy both shelve bus device ports were disconnected from controller 2.
1st disconnect gave an alert in CV as expected. Disconnecting the 2nd and the array failed completely including access to CV.
Both device ports disconnected from controller 2 access to storage and Command View went offline. Internal mgmtmod CV could not "take over" control from the management server CV.
Reconnecting the cables did not help either as they port lights did not illuminate and it appeared that the controller went completely offline.
This seems a simple and reliable test for controller failure however the Array basically fell over.
Has anybody tried such a test with the EVA 4400?
I am worried that this shows a huge vulnerability with the EVA 4400 equipment. In my experience with other equipment this scenario / test is valid and should work.
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тАО05-25-2011 12:50 PM
тАО05-25-2011 12:50 PM
Re: Redundancy Failure testing EVA 4400 controllers
Hope this helps!
Regards
Torsten.
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тАО05-25-2011 08:48 PM
тАО05-25-2011 08:48 PM
Re: Redundancy Failure testing EVA 4400 controllers
http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01883137/c01883137.pdf
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тАО05-26-2011 04:57 AM
тАО05-26-2011 04:57 AM
Re: Redundancy Failure testing EVA 4400 controllers
1) a double-error. Redundancy deals with single-errors.
and
2) it does not simulate a failure if the controller module.
From what I have seen about the architecture, you cannot really simulate that.
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тАО05-26-2011 08:39 AM
тАО05-26-2011 08:39 AM
Re: Redundancy Failure testing EVA 4400 controllers
Isn't that what you you when you replace a controller?
However, I have seen an older EVA hang during controller replacement.
On the other hand, I have replaced several controllers on EVA's, including the 4400, with absolutely no problem.
If you test again, I expect that it will work.
BR
/jag
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тАО05-26-2011 08:58 AM
тАО05-26-2011 08:58 AM
Re: Redundancy Failure testing EVA 4400 controllers
No, it isn't.
Because you shut down this controller first.
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО05-26-2011 09:19 AM
тАО05-26-2011 09:19 AM
Re: Redundancy Failure testing EVA 4400 controllers
I would think controllers do NOT do proper shutdowns when the fail.
BTW I used HP's wiring diagram for shelve addition attached here
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тАО05-26-2011 09:34 AM
тАО05-26-2011 09:34 AM
Re: Redundancy Failure testing EVA 4400 controllers
Hope this helps!
Regards
Torsten.
__________________________________________________
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those who understand binary, and those who don't.
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No support by private messages. Please ask the forum!
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тАО05-26-2011 10:35 AM
тАО05-26-2011 10:35 AM
Re: Redundancy Failure testing EVA 4400 controllers
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тАО05-26-2011 11:19 AM
тАО05-26-2011 11:19 AM
Re: Redundancy Failure testing EVA 4400 controllers
why:
1) did the EVA fall over and quit service storage?
2) The CV freeze and stop operating?
What testing is possible for controller failure?
We need to use the EVA for production in a VMware infrastructure. This array CANNOT fail on us or all production VM's will fail.