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тАО10-04-2009 07:18 AM
тАО10-04-2009 07:18 AM
Multisite cluster / Status No Quorum after primary site is down
i hope someone can help me or can give me the information i need it.
First, ist only a test environment. :-)
I have installed a mutlisite cluster with 3 nodes on each site, so i have 5 managers. On the primary site 3 Managers and in the other side 2 Managers. After "reset" the primary site for testing i have only 2 active managers. So i cannot access the volumens, thats OK because of the two managers.
BUT
How is it possible to take the volumes (secondary site) online?
I cannot start or great other managers in the management group. I cannot found any information in the cli reference guide.
I know the best practive for multisite cluster, but we dont have more then two sites. And i think it must be possible to recover the quorum majority.
Hope someone can help me
Regards
Daniel
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тАО10-05-2009 09:37 AM
тАО10-05-2009 09:37 AM
Re: Multisite cluster / Status No Quorum after primary site is down
The multi-site user manual has a section on quorum that describes the different ways to solve this.
I'll summarize though. You should either...
1-run 4 manangers, two in each site, and have a "virtual manager" added but not running. This way if either site fails you simply right click the virtual manager in the surviving site and start it. This design only allows for manual failover, but works if you really only have two sites.
2-run 4 managers at each site and have a "fail-over manager" running somewhere nuetral. This gives you completely automated failover in either direction.... so is obviously the preferred method.
The way you have it running right now is okay if you really want the site with three managers to be the only site that can survive automatically... and will only failover to the 2nd site if the first is crushed by a meteor or something similar.
Not the usual setup for multi-site configration though.
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тАО10-06-2009 01:17 PM
тАО10-06-2009 01:17 PM
Re: Multisite cluster / Status No Quorum after primary site is down
Run 2 managers at each site
Run a failover manager at the primary site.
Have a copy of the failover manager VM NOT running, but hosted on a VM at the secondary site...
If the primary site goes down, start up the copy of the Failover Manager VM at the secondary site. Quorum should then return at the secondary site.
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тАО10-06-2009 01:22 PM
тАО10-06-2009 01:22 PM
Re: Multisite cluster / Status No Quorum after primary site is down
the 4 mgr in each location = the win! ;)
Blast this forum... how do I edit a post?
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тАО10-08-2009 11:13 PM
тАО10-08-2009 11:13 PM
Re: Multisite cluster / Status No Quorum after primary site is down
After the failover you cannot add this manager.
In this case, i would like to try the recoverquorum command. I found some information in the manuals, that is possilbe the recover the quorum with the cli. But in the cli (Version 8.1.0.102) i cannot found this command line tool.
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тАО11-30-2009 03:21 AM
тАО11-30-2009 03:21 AM
Re: Multisite cluster / Status No Quorum after primary site is down
Noticed that I can't add Virtual Manager when using FOM. So I can't have Virtual Manager as 'spare' in Management Group waiting for primary site to go down.
I'm was also thinking adding copy of FOM to secondary site. Is this supported / documented configuration?
Have anybody founded systax for recoverquorum command? There is no mention about the command in CLIQ user guide.
-Miika
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тАО06-01-2010 12:37 PM
тАО06-01-2010 12:37 PM
Re: Multisite cluster / Status No Quorum after primary site is down
thanks,
Jim
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тАО06-01-2010 10:33 PM
тАО06-01-2010 10:33 PM
Re: Multisite cluster / Status No Quorum after primary site is down
Please be careful - do not experiment with it in a production environment!!
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тАО06-02-2010 05:44 AM
тАО06-02-2010 05:44 AM
Re: Multisite cluster / Status No Quorum after primary site is down
Thanks for the warning.
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тАО06-02-2010 06:27 AM
тАО06-02-2010 06:27 AM
Re: Multisite cluster / Status No Quorum after primary site is down
Then you're right :-(