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тАО07-06-2010 09:34 AM
тАО07-06-2010 09:34 AM
Breaking disk mirror / replacement after testing
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тАО07-06-2010 10:59 AM
тАО07-06-2010 10:59 AM
Re: Breaking disk mirror / replacement after testing
One of my colleagues destroyed one of my OS disks because he plugged it in while the server was powered off and the mirroring went into the 'wrong direction' - goodbye data :-(
Works fine if you put the disk with the old data in while the system is running.
I guess you did not really 'break' the mirror, just pulled the disk during power-off. Otherwise it would mean you've used the ACU to split the RAID set into two independed disks and had to revert that operation.
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тАО07-11-2010 06:36 AM
тАО07-11-2010 06:36 AM
Re: Breaking disk mirror / replacement after testing
Power down server.
Remove disk 0 or 1.
Power up.
let it rebuild to the spare.
Make your updates.
Test
if everything is ok.
Hotplug the missing disk.
The META data is time stamped.
If you coldplug the missing disk
The smart array will rebuild from the latest time stamp to oldest.
Why things went wrong for Uwe's colleage.
Your guess is as good as mine.
I recommend
Cold remove.
Hot plug.
Beware, there's allways a risk.
Ensure you have got a good backup.
Use System Management home page, ACU and ADU
to ensure that all disks are ok, and ID's is correct.
From generation 6 smart arrays and some of the later smart arrays, it is possible to do an on-line spilt and recombine.
But I have no idea, how it behave with the spare disk.
BR
/jag
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тАО07-13-2010 05:26 AM
тАО07-13-2010 05:26 AM
Re: Breaking disk mirror / replacement after testing
If things don├в t go well I will be powering the server down, removing both disk1 and disk2, inserting disk0, powering up the system, then putting disk1 and disk2 back into the mix.
Any other recommendations or input is welcome!
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тАО07-13-2010 10:50 PM
тАО07-13-2010 10:50 PM
Re: Breaking disk mirror / replacement after testing
Good luck.
BR
/jag