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06-21-2009 08:56 PM
06-21-2009 08:56 PM
Has anyone change their failback perference settings while applications are running online?
Any performance impact?
Thanks!
Solved! Go to Solution.
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06-22-2009 04:21 AM
06-22-2009 04:21 AM
SolutionPreferred path/mode -- Designate one controller, arbitrarily, as path A, and the other as path B. This setting provides a way of initially distributing the virtual disk load evenly between controllers. During operation, this path preference can be overridden later.
Failover only â Controller turns over control of all its virtual disks to the
other controller and remains inoperative.
Failover and failback â Controller turns over control of all its virtual disks to the other controller. If the condition that caused the failover no
longer exists, the controller automatically takes control of its own virtual disks again
You can change the preference online. And there won't be any performance impact if you are selecting "Failover and failback".
Rgds,
Sreekanth.
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06-22-2009 06:38 AM
06-22-2009 06:38 AM
Re: EVA8100 - Any impact while setting failback preference setting online.
Assuming you change the failover setting for a particular vdisk to Path A Failover. (Assuming Controller B is the managing controller)
Will the setting take effect immediately when you click save in Command View EVA?
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06-22-2009 07:06 AM
06-22-2009 07:06 AM
Re: EVA8100 - Any impact while setting failback preference setting online.
We have done this on production volumes during the day.
During operation, the managing controller may change depending on your setting and circumstances. We have never had any impact by this change.
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06-22-2009 07:14 AM
06-22-2009 07:14 AM
Re: EVA8100 - Any impact while setting failback preference setting online.
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06-22-2009 07:15 AM
06-22-2009 07:15 AM