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Recovery and backup for beginners


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My first slides on recovery and backups for beginners.

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Recovery and backup for beginners

  1. 1. Recovery and Backups for BeginnersMike HillwigBoston, MA5/31/2013 |Footer Goes Here1 |
  2. 2. Mike Hillwig SQL Server DBA Working with SQL Server since SQL 7 Senior DBA at hosting division of a financial softwarecompany owned by a large financial institution Resume includes Acme Packet Oracle, Shawmut Designand Construction, Equitable Resources Certified in ITIL Foundations
  3. 3. Mike Hillwig Owned by Two Pugs Avid Cook Lover of Blue Cheese And Bacon Geek at Heart
  4. 4. Obligatory Social Networking Slide anysocialnetworkingsite/mikehillwig
  5. 5. Housekeeping Slides and scripts at Blog post at Don’t let me talk too fast
  6. 6. Beware of the Blogs There is some amazingadvice out there. But… Anybody can put badadvice on the internet Trust people you know Assume I’m an idiot I don’t trust people whosay “ALWAYS” or“NEVER” Test everything in yourown test environmentfirst.
  7. 7. Lets talk strategy Who has a backup strategy? Do you have a recovery strategy?
  8. 8. If you have a backup strategy and not arecovery strategy, youre doing it wrong!
  9. 9. Lets talk business SLA: Service Level Agreements (with yourcustomers) OLA: Operational Level Agreements (with yourorganization) RTO: how quickly you need to be recovered(usually in hours) after a failure RPO: how much data loss (usually in minutes) isacceptable
  10. 10. The lower your RTO and RPO, the greaterthe cost.
  11. 11. Myth Busting Backup and Recovery are NOT the samething as high availability. High Availability (Clustering, Always On) area completely different topic. Log Shipping is another topic for another day.
  12. 12. Recovery Models Simple Recovery – Allows us to restore a fullbackup. Full Recovery Allows us to restore a full backup Then roll forward transaction log backups Stop at a specific point in time BULK LOGGED – Similar to Full Recovery,but we’re not talking about it today.
  13. 13. What is the right Recovery Model to Use? It depends on your RPO It also depends on your data and businessprocesses
  14. 14. Why RPO Matters Does your RPO allow you to lose the databetween full backups? Probably not. But it can happen.
  15. 15. Why Your Data and Business Matters How many of your databases have data thatdoesn’t change between full backups? Can your data be recreated from import filesor re-running a process to run data updates?
  16. 16. Matching Recovery Models to Backups SIMPLE: Regular FULL backups FULL: Regular FULL backups AND frequent transaction log backups How frequent? It depends on your RPO.
  17. 17. A Word on Log Shipping Another form of Backup and Recovery Three Step Process Backup Transaction Logs Copies Transaction Log Backups to Target Restores Transaction Log Backups on Target Very helpful for Disaster Recovery
  18. 18. Had enough theory?
  19. 19. Let’s Demo
  20. 20. If you have a backup strategy and not arecovery strategy, youre doing it wrong!
  21. 21. Wrap Up Slides and blog post
  22. 22. Questions?