3. Information explosion 1.4X 44X

6. Internet AD Web browser Outlook (remote user) Mobile phone Line of business application Outlook (local user) External SMTP servers Enterprise Network Phone system (PBX or VOIP) Layer 4LB CAS CAS Array MBX DAG Edge Transport Routing and AV/AS

7. Simplified high availability

10. Site Boundary MBX1 Transport MBX Transport Store DB 1 DB 2 Mail.que MBX2 Transport MBX Transport Store DB 1 DB 2 Mail.que MBX3 Transport MBX Transport Store DB 1 DB 2 Mail.que MBX4 Transport MBX Transport Store DB 1 DB 2 Mail.que MBX5 Transport MBX Transport Store DB 3 DB 4 Mail.que MBX6 Transport MBX Transport Store DB 3 DB 4 Mail.que MBX7 Transport MBX Transport Store DB 3 DB 4 Mail.que MBX8 Transport MBX Transport Store DB 3 DB 4 Mail.que CAS2013 or MBX2013 SMTP 250 OK R1, R2, R3R3 R2R1R1, R2, R3 Log

11. Molly Dempsey Alex Darrow move

13. High availability

14. Check Probe Notify Escalate Recover Monitor

15. Check Notify Probe

16. Intervals System Checks Managed availability checkpoints 20 sec5 min20 min Database Availability Group CAS Array Redundancy groups Corresponding group Mailbox self check Protocol self check Proxy self check Experience level check

17. Get-HealthSet –Server EXCHMBX01 -HealthSet All HealthGroupHealthSetStateLastTransitionTime OWACTPFunctional9:53 AM 8/15/2011 OutlookCTPFunctional9:53 AM 8/15/2011 MobileCTPFunctional9:53 AM 8/15/2011 UMCTPFunctional9:53 AM 8/15/2011 ProvisionCTPFunctional9:53 AM 8/15/2011 MRSSvcHealthFunctional9:53 AM 8/15/2011 OABSvcHealthFunctional9:53 AM 8/15/2011 DiskSpaceSrvHealthFunctional9:53 AM 8/15/2011 IOPsSrvHealthFunctional9:53 AM 8/15/2011 MemorySrvHealthFunctional9:53 AM 8/15/2011 CPUSrvHealthFunctional9:53 AM 8/15/2011 ADDependencyFunctional9:53 AM 8/15/2011 DNSDependencyFunctional9:53 AM 8/15/2011

18. —OWA send —OWA failure —OWA failure detected —OWA restart service —OWA restart complete —OWA verified as healthy —OWA send —OWA failure —OWA failure detected —OWA restart service —OWA restart service failed —Failover server’s databases —OWA service restarts —OWA verified as healthy —Server becomes “good” failover target (again) Layer 4 LB MBX-1 DB1 DB2 MBX-2 OWA DB1 DB2 MBX-3 OWA DB1 DB2 OWA DB1 CAS 1 CAS 2 DAG

20. Work Smarter, Anywhere.