4. MCS: Enterprise Communications CoE Architect

5. Senior Program Manager – Enterprise Deployment Engineering

9. 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

13. 13 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

15. 15 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

17. 17

18. 18

20. 20 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

25. Look familiar?

27. 27

28. 28 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

31. 31

35. Primary Copy Offline

40. All Copies Offline

46. 46

47. 47

53. 53

54. 54

57. 57

58. 58

63. Q&A