Is more than one Central Site in the same AD site supported?

Working with a customer here, and they will be hosting 250,000 accounts for Lync 2013, and I know that a Central Site can only host 240,000 accounts. Knowing this limitation, can more than one Central Site be located within the same data center? I would think that separate subnets (AD Sites) are all that is required.

Is it this simple?

Thanks,

Chr

May 12th, 2014 3:21pm

I haven't looked at the limits of a site, because I've never had to go that high.  Can you reference where you found that information?  Is that an actual limitation or just a limit of the capacity planner?  http://technet.microsoft.com/en-us/library/jj205120.aspx

I couldn't find reference to it in the user models which is why I ask if you have more information: http://technet.microsoft.com/en-us/library/gg615015.aspx

I'm not challenging it, I'm just unaware of it.  What modalities and roles would you be supporting? 

And you could split the pools into different sites if needed, that should get you around the limit if it exists. 

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May 12th, 2014 4:11pm

Hello,

When you running the Lync 2013 planning tool you can receive this information about the limitation (of course if you type more than the limit).

Beside the Lync 2013 planning tool you can work with the Release Notes for Lync Server 2013 and work with two central sites, "There is a maximum of 10 central sites supported".

For your issue you can create another central site and work with more than 240000 users.

Eli.

May 13th, 2014 12:41am

You are correct, in what you just wrote.

I see no issue in adding another Central Site, though wanted to definitively know if the Central Site has to be aligned with a subnet, which might imply an AD site, or not. Not having the AD Site/Subnet limitation makes the design simpler.

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May 13th, 2014 9:25pm

Lync sites do not tie to AD sites, you will have no issues having multiple Lync sites no matter the AD Site/Subnet the servers are located.

"Note that Lync Server sites are a separate concept from Active Directory Domain Services sites and Microsoft Exchange Server Sites": http://technet.microsoft.com/en-us/library/gg398076.aspx

May 13th, 2014 9:45pm

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