4. Microsoft Consultantancy Services Enterprise Communications Global Practice Solutions Architect

8. 10 FE + tightly coupled back end Lync 2013 (FE s+ loosely coupled Back-end store) SQL® Server database (DB) bottleneck—business logic Blob Storage DB used for storing “Blobs”—persisted store DB used for presence updates and subscriptions Dynamic data: Presence updates handles on FEs Lync 2010 PoolLync 2013 Pool 1-10 Front End Servers 1-N Front End Servers

12. Total Number of Front End Server in the pool (defined in Topology) Number of Servers that must be running for pool to be functional 1-21 3-42 5-63 7-84 9-105 11-126

14. User Group 1 User Group 2 Group 1 Group 3 Fabric node Group 2 Fabric node Group 1 Fabric node Group 3 Fabric node Group 3 Fabric node Group 1 Fabric node Group 2 Group 1

16. 16

17. 17

19. 19 OS Node 1 Node 4 Node 2 Node 3 Node 5 Stateful Service (Primary) Stateful Service (Secondary) Stateful Service (Secondary) Stateful Service (Primary) Stateful Service (Secondary) Replication

24. Look familiar?

27. P P Node 3 Node 2 Node 4 Node 5 Node 6 Node 1 S S S S P P S S S S S S S S P P S S S S P P S S S S P P UD:/UpgradeDomain1 UD:/UpgradeDomain2 UD:/UpgradeDomain3

28. Initial Pool Size Number of Upgrade Domains Front End Placement per Upgrade Domain 128First 8 FEs into 4 UD with 2 each, then 4 UD with 1 each 88Each FE placed into its own UD 98First 2 FEs into one UD, then 7 UD with 1 each 55Each FE placed into its own UD

35. Primary Copy Offline

40. All Copies Offline

61. Q&A

62. www.microsoft.com/learning http://developer.microsoft.com http://microsoft.com/technet http://channel9.msdn.com/Events/TechEd