Dyn Webinar: DNS Disaster Recovery & Preparedness

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Active hurricane season starts every June 1st and ends on November 30th, bringing with it the potential of extended downtime for your website.

You might be thinking, "Rain and wind...who cares?" Remember Superstorm Sandy? A lot of brands with websites hosted on the East Coast went down because they weren't prepared. That's what this webinar is all about, especially important because of an above-average hurricane season predicted.

In this slide deck, Dyn CTO Cory von Wallenstein discusses all of this and more.

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Dyn Webinar: DNS Disaster Recovery & Preparedness

  1. 1. Preparing for DNS Disaster August 28, 2013 Cory von Wallenstein CTO @cvwdyn
  2. 2. Preparing for DNS Disaster @cvwdyn @dyninc Cory von Wallenstein Chief Technology Officer Dyn Inc. cvw@dyn.com @cvwdyn
  3. 3. Preparing for DNS Disaster @cvwdyn @dyninc What do we mean by DNS disaster? $ dig company.com ; <<>> DiG 9.8.3-P1 <<>> company.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1876 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;company.com. IN A
  4. 4. Preparing for DNS Disaster @cvwdyn @dyninc
  5. 5. Preparing for DNS Disaster @cvwdyn @dyninc October 2012 Hurricane Sandy
  6. 6. Preparing for DNS Disaster @cvwdyn @dyninc
  7. 7. Preparing for DNS Disaster @cvwdyn @dyninc
  8. 8. Preparing for DNS Disaster @cvwdyn @dyninc
  9. 9. Preparing for DNS Disaster @cvwdyn @dyninc
  10. 10. Preparing for DNS Disaster @cvwdyn @dyninc
  11. 11. Preparing for DNS Disaster @cvwdyn @dyninc
  12. 12. Preparing for DNS Disaster @cvwdyn @dyninc
  13. 13. Preparing for DNS Disaster @cvwdyn @dyninc
  14. 14. Preparing for DNS Disaster @cvwdyn @dyninc
  15. 15. Preparing for DNS Disaster @cvwdyn @dyninc
  16. 16. Preparing for DNS Disaster @cvwdyn @dyninc “A frying squirrel took out half of our Santa Clara data center two years back,” - Mike Christian, Yahoo
  17. 17. Preparing for DNS Disaster @cvwdyn @dyninc “Squirrel chews account for a whopping 17% of our damages so far this year! But let me add that it is down from 28% just last year and it continues to decrease since we added cable guards to our plant.”, Fred Lawler, Level(3)
  18. 18. Preparing for DNS Disaster @cvwdyn @dyninc Disasters can happen anywhere. Disasters can happen anytime. Disasters can happen to anyone.
  19. 19. Preparing for DNS Disaster @cvwdyn @dyninc Users expect reliable & fast services. No excuses.
  20. 20. Preparing for DNS Disaster @cvwdyn @dyninc
  21. 21. Preparing for DNS Disaster @cvwdyn @dyninc What should you know about your data center before you commit?
  22. 22. Preparing for DNS Disaster @cvwdyn @dyninc “Wired people should know something about wires” - Neal Stephenson, quoted in Andrew Blum’s TED Talk What is the Internet, Really?
  23. 23. Preparing for DNS Disaster @cvwdyn @dyninc
  24. 24. Preparing for DNS Disaster @cvwdyn @dyninc
  25. 25. Preparing for DNS Disaster @cvwdyn @dyninc
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  27. 27. Preparing for DNS Disaster @cvwdyn @dyninc
  28. 28. Preparing for DNS Disaster @cvwdyn @dyninc
  29. 29. Preparing for DNS Disaster @cvwdyn @dyninc Who carries your bits? Where are they carried?
  30. 30. Preparing for DNS Disaster @cvwdyn @dyninc
  31. 31. Preparing for DNS Disaster @cvwdyn @dyninc Speed of light 299,792.458 km/second (in a vacuum) Theoretical RTT ~40ms Real RTT ~90ms
  32. 32. Preparing for DNS Disaster @cvwdyn @dyninc
  33. 33. Preparing for DNS Disaster @cvwdyn @dyninc Where will you deploy your second datacenter?
  34. 34. Preparing for DNS Disaster @cvwdyn @dyninc Where will you deploy your second datacenter?
  35. 35. Preparing for DNS Disaster @cvwdyn @dyninc What do you drill? How often? Can I watch?
  36. 36. Preparing for DNS Disaster @cvwdyn @dyninc When disaster approaches, how can you use advanced services to help avoid downtime?
  37. 37. Preparing for DNS Disaster @cvwdyn @dyninc
  38. 38. Preparing for DNS Disaster @cvwdyn @dyninc
  39. 39. Preparing for DNS Disaster @cvwdyn @dyninc Failover to a Status Page ;; QUESTION SECTION: ;twitter.com. IN A ;; ANSWER SECTION: twitter.com. 30 IN A 199.16.156.230 twitter.com. 30 IN A 199.16.156.198 twitter.com. 30 IN A 199.16.156.38
  40. 40. Preparing for DNS Disaster @cvwdyn @dyninc Active Failover to a Status Page ;; QUESTION SECTION: ;twitter.com. IN A ;; ANSWER SECTION: twitter.com. 30 IN A 199.16.156.230 twitter.com. 30 IN A 199.16.156.198 twitter.com. 30 IN A 199.16.156.38 Monitor… actively change when down
  41. 41. Preparing for DNS Disaster @cvwdyn @dyninc Active Failover to a Status Page Pros: • Preserve the trust in brand, maintain communication Cons: • Longer time to recovery • You’re still “down”
  42. 42. Preparing for DNS Disaster @cvwdyn @dyninc Active/Passive… Primary/Backup… Pros: • Shorter time to recovery Cons: • Cross your fingers that it works when you need it • Drill, drill, drill. Test, test, test.
  43. 43. Preparing for DNS Disaster @cvwdyn @dyninc Active/Active (Iovation) Pros: • Highly available • Shift traffic as needed (maintenance) Cons: • Architect for it • Two sites each operating at >50% capacity risks outage
  44. 44. Preparing for DNS Disaster @cvwdyn @dyninc Ever Too Late? Never! Constant evaluation of the right tool in the toolbox Will evolve as your business evolves Accept responsibility and ownership, and make it better
  45. 45. Preparing for DNS Disaster @cvwdyn @dyninc Cory von Wallenstein Chief Technology Officer Dyn Inc. cvw@dyn.com @cvwdyn
  46. 46. Preparing for DNS Disaster @cvwdyn @dyninc Thank You! Next Webinar: Holiday Planning For DNS & Email Wednesday, September 25 For More Disaster Planning Content: Dyn.com/Content-Hub

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