The document discusses disaster recovery strategies for databases. It covers the differences between high availability (HA) and disaster recovery (DR), various HA and DR options like replication, clustering, and log shipping, and best practices for backups and testing disaster recovery plans. Key HA strategies discussed are clustering and synchronous mirroring while asynchronous mirroring, log shipping, and replication are covered as DR options. The document emphasizes regularly testing backups and disaster recovery plans.

1. Disaster Recovery 101 Brent Ozar, Quest Software

2. Brent Ozar SQL Server Expert for Quest Software Former SQL DBA for $7b company inHurricane Alley Managed >80tb SAN, VMware

3. Today’s Agenda HA vs DR HA Options DR Options Backup Best Practices Learned the Hard Way Resources

4. Common Backup Schedules Daily fulls Daily fulls, frequent t-logs Weekly fulls, daily diffs, frequent t-logs “What backups?”

5. High Availability is for: Disaster Recovery is for: Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/

7. Asynchronous Mirroring

8. Log Shipping

9. SAN Replication

10. Virtualization Replication

11. Clustering

12. Synchronous Mirroring

13. ReplicationPhoto licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/

14. HA: Clustering

15. HA: Synchronous Mirroring

16. Both HA, DR: Replication

17. DR: Asynchronous Mirroring

18. DR: Log Shipping

19. DR: SAN Replication

20. DR: Virtualization Replication

22. Asynchronous Mirroring

23. Log Shipping

24. SAN Replication

25. Virtualization Replication

26. Clustering

27. Synchronous Mirroring

28. ReplicationPhoto licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/

29. Backup Best Practices Never back up directly to local disk Back up to file share Back up to different SAN Back flat files up to tape Get the tapes offsite fast If it’s really critical, mirror the backups Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/darwinbell/465459020/

30. Avoid Agents Lose schedule control Can’t gauge success Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/practicalowl/314989744/

31. Do Fire Drills Ahead Of Time Build a standalone restore testbed Document how long a restore will take for managers Update it quarterly Trust no one Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/millzero/705902956/

32. Tale of Two Bookmark Services

33. http://delicious.com/brento

34. Worst Case Scenario

35. Lessons Learned Test your backups Retain your backups Know business value of backups

36. Log Shipping Lesson Learned Production SQL Server High Availability SQL Server Log Shipping SAN #1 SAN #2 Production SQL Arrays HASQL Arrays

37. Surprise! Production SQL Server High Availability SQL Server File Server Log Shipping Log Shipping SAN #1 SAN #2 Production SQL Arrays HASQL Arrays File Server Arrays

38. Brent’s Role Swap of Doom Disaster Recovery Datacenter Production Datacenter 100MB connection Data synced to DR

39. Brent’s Role Swap of Doom Disaster Recovery Datacenter Production Datacenter 100MB connection Data synced back to production

40. Brent’s Role Swap of Doom Disaster Recovery Datacenter Production Datacenter 100MB connection Data synced back to production PLUS Users running applications that query the database in DR 1gb Ethernet

41. Brent’s Role Swap of Doom Disaster Recovery Datacenter Production Datacenter 100MB connection Tape Jukeboxes w/10 Drives Tape Jukeboxes w/6 Drives

42. Building a Bug-Out Bag Photo Licensed with Creative Commons from http://www.flickr.com/photos/78256324@N00/394214262/

43. Photo Licensed with Creative Commons from http://www.flickr.com/photos/moflytier/45842386/

44. Personal Contents Power inverter Gadget chargers Clothes & toiletries Water & food Insurance papers Road atlas Flashlight Pillow

45. Work Contents Software installs License keys Cell data cardor Verizon MiFi Contact list(updated annually)

46. Contact Lists Family Coworkers Managers Alternate Offices HW Vendors SW Vendors ISP/Colo Photo Licensed with Creative Commons from http://www.flickr.com/photos/toastforbrekkie/1237898664/

47. Lessons Learned Trust, but verify Test, test, test Whiteboard your environment Look for single points of failure Get a bug-out bag

49. Visit our dedicated SQL Server community site at: http://sqlserver.quest.com

50. Check out our “Backstage” area with all of our collateral and upcoming events including our ‘Pain of the Week’ webcasts:

51. www.quest.com/backstage

52. www.quest.com/backstage/pow.aspx