Disaster Recovery 101<br />Brent Ozar, Quest Software<br />
Brent Ozar<br />SQL Server Expert for Quest Software<br />Former SQL DBA for $7b company inHurricane Alley<br />Managed &g...
Today’s Agenda<br />HA vs DR<br />HA Options<br />DR Options<br />Backup Best Practices<br />Learned the Hard Way<br />Res...
Common Backup Schedules<br />Daily fulls<br />Daily fulls, frequent t-logs<br />Weekly fulls, daily diffs, frequent t-logs...
High Availability is for:<br />Disaster Recovery is for:<br />Photo licensed with Creative Commons, used from:http://www.f...
High Availability:<br />Disaster Recovery:<br /><ul><li>Replication
Asynchronous Mirroring
Log Shipping
SAN Replication
Virtualization Replication
Clustering
Synchronous Mirroring
Replication</li></ul>Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/<br /...
HA: Clustering<br />
HA: Synchronous Mirroring<br />
Both HA, DR: Replication<br />
DR: Asynchronous Mirroring<br />
DR: Log Shipping<br />
DR: SAN Replication<br />
DR: Virtualization Replication<br />
Brent’s Personal Favorites<br />High Availability:<br />Disaster Recovery:<br /><ul><li>Replication
Asynchronous Mirroring
Log Shipping
SAN Replication
Virtualization Replication
Clustering
Synchronous Mirroring
Replication</li></ul>Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/<br /...
Backup Best Practices<br />Never back up directly to local disk<br />Back up to file share<br />Back up to different SAN<b...
Avoid Agents<br />Lose schedule control<br />Can’t gauge success<br />Photo licensed with Creative Commons, used from:http...
Do Fire Drills Ahead Of Time<br />Build a standalone restore testbed<br />Document how long a restore will take for manage...
Tale of Two Bookmark Services<br />
http://delicious.com/brento<br />
Worst Case Scenario<br />
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Disaster Recovery 101

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Transcript of "Disaster Recovery 101"

  1. 1. Disaster Recovery 101<br />Brent Ozar, Quest Software<br />
  2. 2. Brent Ozar<br />SQL Server Expert for Quest Software<br />Former SQL DBA for $7b company inHurricane Alley<br />Managed &gt;80tb SAN, VMware<br />
  3. 3. Today’s Agenda<br />HA vs DR<br />HA Options<br />DR Options<br />Backup Best Practices<br />Learned the Hard Way<br />Resources<br />
  4. 4. Common Backup Schedules<br />Daily fulls<br />Daily fulls, frequent t-logs<br />Weekly fulls, daily diffs, frequent t-logs<br />“What backups?”<br />
  5. 5. High Availability is for:<br />Disaster Recovery is for:<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/<br />
  6. 6. High Availability:<br />Disaster Recovery:<br /><ul><li>Replication
  7. 7. Asynchronous Mirroring
  8. 8. Log Shipping
  9. 9. SAN Replication
  10. 10. Virtualization Replication
  11. 11. Clustering
  12. 12. Synchronous Mirroring
  13. 13. Replication</li></ul>Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/<br />
  14. 14. HA: Clustering<br />
  15. 15. HA: Synchronous Mirroring<br />
  16. 16. Both HA, DR: Replication<br />
  17. 17. DR: Asynchronous Mirroring<br />
  18. 18. DR: Log Shipping<br />
  19. 19. DR: SAN Replication<br />
  20. 20. DR: Virtualization Replication<br />
  21. 21. Brent’s Personal Favorites<br />High Availability:<br />Disaster Recovery:<br /><ul><li>Replication
  22. 22. Asynchronous Mirroring
  23. 23. Log Shipping
  24. 24. SAN Replication
  25. 25. Virtualization Replication
  26. 26. Clustering
  27. 27. Synchronous Mirroring
  28. 28. Replication</li></ul>Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/<br />
  29. 29. Backup Best Practices<br />Never back up directly to local disk<br />Back up to file share<br />Back up to different SAN<br />Back flat files up to tape<br />Get the tapes offsite fast<br />If it’s really critical, mirror the backups<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/darwinbell/465459020/<br />
  30. 30. Avoid Agents<br />Lose schedule control<br />Can’t gauge success<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/practicalowl/314989744/<br />
  31. 31. Do Fire Drills Ahead Of Time<br />Build a standalone restore testbed<br />Document how long a restore will take for managers<br />Update it quarterly<br />Trust no one<br />Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/millzero/705902956/<br />
  32. 32. Tale of Two Bookmark Services<br />
  33. 33. http://delicious.com/brento<br />
  34. 34. Worst Case Scenario<br />
  35. 35. Lessons Learned<br />Test your backups<br />Retain your backups<br />Know business value of backups<br />
  36. 36. Log Shipping Lesson Learned<br />Production<br />SQL Server<br />High Availability<br />SQL Server<br />Log Shipping<br />SAN #1<br />SAN #2<br />Production SQL Arrays<br />HASQL Arrays<br />
  37. 37. Surprise!<br />Production<br />SQL Server<br />High Availability<br />SQL Server<br />File Server<br />Log Shipping<br />Log Shipping<br />SAN #1<br />SAN #2<br />Production SQL Arrays<br />HASQL Arrays<br />File Server Arrays<br />
  38. 38. Brent’s Role Swap of Doom<br />Disaster Recovery<br />Datacenter<br />Production<br />Datacenter<br />100MB connection<br />Data synced to DR<br />
  39. 39. Brent’s Role Swap of Doom<br />Disaster Recovery<br />Datacenter<br />Production<br />Datacenter<br />100MB connection<br />Data synced back to production<br />
  40. 40. Brent’s Role Swap of Doom<br />Disaster Recovery<br />Datacenter<br />Production<br />Datacenter<br />100MB connection<br />Data synced back to production<br />PLUS<br />Users running applications that query the database in DR<br />1gb Ethernet<br />
  41. 41. Brent’s Role Swap of Doom<br />Disaster Recovery<br />Datacenter<br />Production<br />Datacenter<br />100MB connection<br />Tape Jukeboxes w/10 Drives<br />Tape Jukeboxes w/6 Drives<br />
  42. 42. Building a Bug-Out Bag<br />Photo Licensed with Creative Commons from http://www.flickr.com/photos/78256324@N00/394214262/<br />
  43. 43. Photo Licensed with Creative Commons from http://www.flickr.com/photos/moflytier/45842386/<br />
  44. 44. Personal Contents<br />Power inverter<br />Gadget chargers<br />Clothes & toiletries<br />Water & food<br />Insurance papers<br />Road atlas<br />Flashlight<br />Pillow<br />
  45. 45. Work Contents<br />Software installs<br />License keys<br />Cell data cardor Verizon MiFi<br />Contact list(updated annually)<br />
  46. 46. Contact Lists<br />Family<br />Coworkers<br />Managers<br />Alternate Offices<br />HW Vendors<br />SW Vendors<br />ISP/Colo<br />Photo Licensed with Creative Commons from http://www.flickr.com/photos/toastforbrekkie/1237898664/<br />
  47. 47. Lessons Learned<br />Trust, but verify<br />Test, test, test<br />Whiteboard your environment<br />Look for single points of failure<br />Get a bug-out bag<br />
  48. 48. Resources<br /><ul><li>Visit our SQL Server technical resource blog at: www.sqlserverpedia.com - feel free to send your SQL Server related technical questions to:ask@sqlserverpedia.com
  49. 49. Visit our dedicated SQL Server community site at: http://sqlserver.quest.com
  50. 50. Check out our “Backstage” area with all of our collateral and upcoming events including our ‘Pain of the Week’ webcasts:
  51. 51. www.quest.com/backstage
  52. 52. www.quest.com/backstage/pow.aspx</li>
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