Tag Archives: Edge

Lync 2013 Enterprise Edition Users and Servers Model


Lync designing & planning is intricate part and right decision can help organization to get better ROI. This article may help Solution Architects, Consultants and System Administrator to choose best Lync server/pool model. Number of Lync servers in a pool, collocated or distributed model of Lync roles typically depends on No. of Lync users, their activities and different geo locations.

Lync 2013 Server Pools Number of Servers Supported No. of End users Remarks
Lync 2013 Front End pool (Collocated with A/V conferencing, Mediation Server, A/M server) 12 80,000 Max. Conferences size is limited to 250 users, Media Bypass is required to support all users with condition of 60 % users are enable for EV and only 40% calls are UC-PSTN calls.
Lync 2013 Front End Pool (A/V only) 2 Large conferences b/w 250 – 1000 users
Lync 2013 Mediation Pool 12 80,000 100% users are enabled for EV and 80% calls are UC-PSTN calls. 12 servers are required if Media by pass in not enable/supported for deployed EV connectivity. No. of servers will reduce based on Media bypass configuration according to the %.
Lync 2013 Persistent Chat 8 (4 active & 4 Passive) 80,000 1, 50,000 users can be enabled for pChat and 80,000 users can use concurrent. Only pChat pool can be stretched b/w sites to achieve DR. For more details check Lync 2013 HA
Lync 2013 Edge Server 4 – 8 80,000 Depends on how many users will access Lync services simultaneously, 3-4 servers for 30-40% & 7-8 servers for 100%
Lync Director (optional) 3 – 8 80,000 Depends on remote users, 3 servers for 30% remote users and 8 servers for 100% remote users.
SQL Server 2* 80,000 *2 for each backend databases

 

Important: Above data has provided for physical servers, minor change can happen if you use virtualization as per MS guidelines. It does not take any accountability of DR plan/scenarios. If you are planning for DR also, please account overhead of DR users if available.

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What’s New in Lync Server 2013…?


Microsoft is playing a major role in Unified Communication market. Lync Server 2013 is a 6th release in last one decade. Enterprise voice was started with OCS 2007 R2 and Lync server 2010 became a major release in Enterprise voice space. Lync 2013 is a major release after Lync 2010 and now cumulative updates are also available to download.

In Lync 2013, Microsoft came up with few tremendous features in terms of voice which changed the overall Lync deployment as well as fit into those countries where government has regulation for VOIP. Now, you are thinking which that tremendous feature is; I am talking about Location based routing (LBR) which can provide room for Lync implementation with Enterprise voice in those countries where government has regulated or they have some specific concerns with regards to VOIP roll out.

I will start with basic features of Lync Server 2013 which differentiate it from previous releases. To start with Lync Server 2013 server roles, I am providing table with comparison which can help you to understand better.

Lync Server 2013 Lync Server 2010
Front End & Back End (A/V is collocated) Front End & Back End
A/V Conferencing (Can be collocated with Front End)
Archiving (Can be deployed separately) Archiving (Can be collocated with Front End)
Monitoring (Can be deployed separately) Monitoring (Can be collocated with Front End)
Mediation (Can be collocated with Front End) Mediation (Can be collocated with Front End)
Director (Optional & Can’t be collocated with Front End) Director (Can’t be collocated with Front End)
Edge (Can’t be collocated with Front End) Edge (Can’t be collocated with Front End)
Persistent Chat (Can’t be collocated with Front End) Group Chat (Can’t be collocated with any Lync Server role)
Standard Edition Server (All above roles combined) Standard Edition Server (All above roles combined except group chat)

 

To get a better understanding, have a look into the images:

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