REF: Exchange 2010 DAG Summary

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1. No Storage Group

2. Support 16 copies for each database

3. Support 100 database in each DAG

4. Public Folder referral for HA – DO NOT point to itself

5. Same disk path for database copies – MDB path – may change after SP1

6. Replication latency < 250ms between recplcation network

7. AM – Active manager, PAM, SAM

8. AM - Master Database Cache – on Memory, maintain by AM – Registry Key on Local Machine for faster access – also on AD

9. AM – update database server status by RPC

10. Disable MAPI Network – no Replication

11. Add server to DAG memnbership will also auto install cluster service

12. HKEY_Local_Machine\Cluster\ExchangeActivemanager\NodeState

13. AM Best Copy Selection - PAM – ContentIndex healthy, Queue Length….

14. Copy Steps, Inspector –> E010000001

15. Activate Database Copy – None (no log files lose)

16. HUB – Dumpster cache – MailQueue – 18MB –

17. Duplicate Detection (cache recipient, message ID, )

18. IS service manual stop or net stop – No switchover and no failover

19. IS service crash – will failover – CCR will 

20. Blue Screen – will failover – CCR will

21. Diskfailure – will failover – CCR won’t

22. Ping no response – will failover – CCR long

23. Passive send a request to Active every 15s for replication

24. and Active will use “File System Notification” Watching to Passive

25. Reseed from select server

26. get-autodiscovervirtualdirectory “server1\audodiscover (default web site)” | fl

27. get-exchangecertificate –generaterequest –path c”\cert.txt –subjectname “cn=mail.nwtraders.com” –domainname hub1, hub1.nwtraders.com, autodiscover.nwtraders.com, cn=mail.nwtraders.com –Privatekeyexportable $true

Import-exchangecertificate –path c:\certnew.cer | enable-exchangecert –services IIS

28. Outlook 2007 access availability service (CAS server) to get schedule free/busy information & OOF

29. Test-Outlookwebservice –id:user1@contoso.com –tragetaddress: user2@contoso.com

30. Outlook 2003 access public folder for schedule free/busy information

31. Exchange 2007 system folder always replication

32. Redirect issue Exchange 2007 CAS – IIS redirect to Exchange (E2K3) and OWA (E2K7) for mixed mode

33. Modify IIS  via EMC a. AP –> IIS – > Metabase

34. https://www.testexchangeconnectivity.com

 

Blog Extended Reading

More Information & Reference
1. Deploying High Availability and Site Resilience

 

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