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SQL 2014 Availability groups and listeners

Posted on 2016-10-05
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Last Modified: 2016-10-05
Hi Experts,

I am using two big SQL servers in one AG.
And I have one Listener for the DBs.

Now I have to copy some more DBs. Is it possible to create another AG with a new listener ?
If yes how many AG are possible and how many Listeners ?
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Question by:Eprs_Admin
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LVL 51

Expert Comment

by:Vitor Montalvão
ID: 41829766
It supports multilple AGs and Listeners but I'm not aware of the maximum of them are allowed.
Mind that you can only have at maximum 2 synchronous replicas and a maximum of 9 replicas (syncs + asyncs).
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LVL 51

Expert Comment

by:Vitor Montalvão
ID: 41829769
And each AG can have up to 8 database replicas.
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Author Comment

by:Eprs_Admin
ID: 41829772
ok then I try to install a new one.
Thanks a lot.
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Accepted Solution

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Vitor Montalvão earned 500 total points
ID: 41829788
Found this MSDN article and it states the following:
"Maximum number of availability groups and availability databases per computer:
The actual number of databases and availability groups you can put on a computer (VM or physical) depends on the hardware and workload, but there is no enforced limit. Microsoft has extensively tested with 10 AGs and 100 DBs per physical machine. Signs of overloaded systems can include, but are not limited to, worker thread exhaustion, slow response times for availability group system views and DMVs, and/or stalled dispatcher system dumps."
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Author Closing Comment

by:Eprs_Admin
ID: 41830053
Thanks a lot.
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