Design Question: Can I use Rest-CsPoolRegisterState command in order start Front End Service when Quorum is lost and less than 85% of FES are available?

Hi,
Assuming below setup for Enterprise edition Lync 2013
Single Pool Stretched architecture with 4 FES servers
Site A Data Center
Site B Data Center
FES
2
2
SQL
1 Primary
1 Mirror
Fact: In a situation when we lose network connectivity to Site A DC, and due to less than 50% FES servers, Quorum will be lost and as a result Front End Service will stop after 5 minutes.
The question is, would I be able to do a manual intervention by using this command
Reset-CsPoolRegistrarState –PoolFqdn <pool name fqdn> –ResetType QuorumLossRecovery , and start FES with just 2 FES servers in Site B DC and 1 SQL
Server?
The reason I am asking this question is because it is mentioned in one of the Lync manuals that at least 85% of the servers must be available to recover once the Quorum has lost. The same manual also mentions to use above
mentioned command in order to recover from Quorum Loss despite the fact that the lost FES servers are still not available.
Thanks in Advance

Hi,
In Lync server 2013 Stretched pools are not supported for the Front End, Edge, Mediation, and Director server roles. It need two Lync pools.
If one pool fail to connect, An administrator can declare an emergency and fail over the pool to the backup pool. That is done by using the:
Invoke-CsPoolFailover –PoolFQDN <Pool fqdn> –DisasterMode –Verbose
More details:
http://blog.avtex.com/2012/07/26/understanding-lync-2013-server-failover/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information
found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
Best Regards,
Eason Huang
Eason Huang
TechNet Community Support

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Design Question: Can I use Rest-CsPoolRegisterState command in order start Front End Service when Quorum is lost and less than 85% of FES are available?

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