Windows Azure Traffic Manager

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Comunidade NetPonto

Apresentação do Nuno Godinho sobre o Windows Azure Traffic Manager na 2ª Reunião da Comunidade NetPonto em Coimbra.

Technologie Business News & Politik

http://netponto.org 2ª Reunião Coimbra - 09/07/2011 Windows Azure Traffic ManagerMelhore a Performance e a Disponibilidade das soluçõesNuno Godinho

Sobre Mim Nuno Filipe Godinho Consultor Independente Mail: Nuno.Godinho@sapo.pt Nuno.Godinho@itech4all.com Blog: http://msmvps.org/blogs/nunogodinho Twitter: @NunoGodinho

Agenda Qual o propósito? Windows Azure Traffic Manager Como resolve o problema? Bases Porquê utilizar? Limitações e Funcionalidades da CTP Boas Práticas Roadmap Resumo Coffee-break

Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region 100 ms 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

Porque é a Performance Importante? 200 ms Europe Region North America Region Asia Pacific Region 100 ms 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

Taxa de transferência vs Taxa de perda 200 ms North America Region Europe Region Asia Pacific Region 100 ms 50 ms N. Europe N. Central – U.S. W. Europe S. Central – U.S. E. Asia S.E. Asia http://www.research.ibm.com/people/n/nahum/papers/sigmetrics01-slides.ppt

Taxa de transferência vs RTT 200 ms North America Region Europe Region Asia Pacific Region 100 ms 50 ms N. Europe N. Central – U.S. W. Europe S. Central – U.S. E. Asia S.E. Asia http://www.research.ibm.com/people/n/nahum/papers/sigmetrics01-slides.ppt

Porque é a Performance Importante? Tornar as aplicações mais rápidas Carregar páginas mais rápidamente Ex. 8 seg para 3 seg Melhorar a Experiência de Utilização e ganhar mais €€€

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 200 ms 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region 100 ms North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Como resolver com o Traffic Manager? Europe Region 100 ms North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

Direcciona o utilizador para o “melhor” deployment entre os Western Europe e North Europe,[object Object]

Direcciona o utilizador para o “melhor” deployment entre os Western Europe e North Europe

Redirecciona para outro deployment se o principal estiver em baixo

Todo o Tráfego direccionado para North Europe. Se falhar enviar para o Western Europe.,[object Object]

Todos os utilizadores da zona da Asia redireccionados para US North, Europeus para North Europe

Direciona os utilizadores com base no DataCenter “melhor” / “mais próximo”

20% dos utilizadores para US North, 80% para North Europe

Possibilita aos utilizadores definir para que deployment cada zona geográfica deverá ser redireccionada

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Windows Azure Traffic Manager

1. http://netponto.org 2ª Reunião Coimbra - 09/07/2011 Windows Azure Traffic ManagerMelhore a Performance e a Disponibilidade das soluçõesNuno Godinho

2. Patrocinadores desta reunião

3. Sobre Mim Nuno Filipe Godinho Consultor Independente Mail: Nuno.Godinho@sapo.pt Nuno.Godinho@itech4all.com Blog: http://msmvps.org/blogs/nunogodinho Twitter: @NunoGodinho

4. Agenda Qual o propósito? Windows Azure Traffic Manager Como resolve o problema? Bases Porquê utilizar? Limitações e Funcionalidades da CTP Boas Práticas Roadmap Resumo Coffee-break

5. Qual o propósito?

6. A Performance é Importante

7. Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

8. Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

9. Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

10. Porque é a Performance Importante? Europe Region North America Region Asia Pacific Region 100 ms 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

11. Porque é a Performance Importante? 200 ms Europe Region North America Region Asia Pacific Region 100 ms 50 ms N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia 6 Datacenters em 3 continentes

12. Taxa de transferência vs Taxa de perda 200 ms North America Region Europe Region Asia Pacific Region 100 ms 50 ms N. Europe N. Central – U.S. W. Europe S. Central – U.S. E. Asia S.E. Asia http://www.research.ibm.com/people/n/nahum/papers/sigmetrics01-slides.ppt

13. Taxa de transferência vs RTT 200 ms North America Region Europe Region Asia Pacific Region 100 ms 50 ms N. Europe N. Central – U.S. W. Europe S. Central – U.S. E. Asia S.E. Asia http://www.research.ibm.com/people/n/nahum/papers/sigmetrics01-slides.ppt

14. Porque é a Performance Importante? Tornar as aplicações mais rápidas Carregar páginas mais rápidamente Ex. 8 seg para 3 seg Melhorar a Experiência de Utilização e ganhar mais €€€

15. Windows Azure Traffic Manager

16. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

17. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

18. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

19. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

20. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

21. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

22. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 200 ms 200 ms 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

23. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

24. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

25. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms N. Europe 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

26. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

27. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

28. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

29. Como resolver com o Traffic Manager? Europe Region North America Region Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

30. Como resolver com o Traffic Manager? Europe Region North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

31. Como resolver com o Traffic Manager? Europe Region 100 ms North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

32. Como resolver com o Traffic Manager? Europe Region 100 ms North America Region 200 ms Asia Pacific Region 100 ms 100 ms 100 ms 100 ms 50 ms N. Europe 50 ms 50 ms W. Europe N. Central – U.S. S. Central – U.S. E. Asia S.E. Asia

33. Bases

34.

35. Exemplo:

36.

37. Exemplo:

38. Direcciona o utilizador para o “melhor” deployment entre os Western Europe e North Europe

39. Um deployment principal

40. Redirecciona para outro deployment se o principal estiver em baixo

41. Exemplo:

42.

43. Exemplo:

44. Todos os utilizadores da zona da Asia redireccionados para US North, Europeus para North Europe

45. Direciona os utilizadores com base no DataCenter “melhor” / “mais próximo”

46. Exemplo:

47. Direcciona o utilizador para o “melhor” deployment entre os Western Europe e North Europe

48. Um deployment principal

49. Redirecciona para outro deployment se o principal estiver em baixo

50. Exemplo:

51.

52. Exemplo:

53. 20% dos utilizadores para US North, 80% para North Europe

54. Possibilita aos utilizadores definir para que deployment cada zona geográfica deverá ser redireccionada

55. Exemplo:

56. Todos os utilizadores da zona da Asia redireccionados para US North, Europeus para North Europe

57. Direciona os utilizadores com base no DataCenter “melhor” / “mais próximo”

58. Exemplo:

59. Direcciona o utilizador para o “melhor” deployment entre os Western Europe e North Europe

60. Um deployment principal

61. Redirecciona para outro deployment se o principal estiver em baixo

62. Exemplo:

63.

64. Round Robin

65. Failover

66. Monitorização dos Serviços

67. Porquê utilizar?

68. Porquê utilizar o Traffic Manager? Resolver requisitos como: Continuidade e Fiabilidade do Negócio (Failover) Diminuir o tempo de latência (Performance) Escalabilidade das soluções (Performance) Esconder o DNS (Disable Policy) Manutenção (Transfer live traffic) Criar melhores soluções em Windows Azure

69. Limitações e Funcionalidades da CTP

70. Características Actuais da CTP Não há SLA Não é pago Não recomendado para produção, mas apenas funciona com os deployments para produção O domínio irá ser alterado após o CTP *.ctp.trafficmgr.com -> *. trafficmgr.cloudapp.net

71. Funcionalidades da CTP Apenas pelo Management Portal (sem API ou SDK) Rediccionar o tráfego para os Windows Azure Hosted Services Métodos de Redireccionamento: Performance Round Robin Fail Over

72. Funcionalidades da CTP Configuração do TTL ( > 30 segundos) Monitorização de HTTP e HTTPS em qualquer porta Criar/Ler/Actualizar/Apagar politicas Ligar e desligar politicas de tráfego

73. Boas Práticas

74. Boas Práticas - Serviços Serviços numa única subscrição Utilizar apenas Serviços do ambiente de produção Dar nomes aos serviços que identifiquem fácilmente o local onde se encontram disponíveis

75. Boas Práticas - Serviços Colocar todos os serviços que se encontram na mesma politica a funcionar nas mesmas portas Colocar todos os serviços a serem utilizados pelo mesmo método

76. Boas Práticas - Politicas Utilizar o Disable Policy ou o Disable hosted service em vez de alterar a politica

77. Boas Práticas – Dominios Traffic Manager Torne os seus perfixos unicos e de fácil compreenção Utilize “pontos”no nome dos dominios Ex. billing.asia.us.europe.contoso DNS TTL (Time-to-Live)

78. Roadmap

79. Funcionalidades Após CTP Relatórios, estatisticas e histórico da monitorização de estado Histórico de alterações das politicas de tráfego Load Balancing Geográfico Load Balacing por Rácio Hierarquia de politicas

80. Funcionalidades Após CTP Verificação do estado das politicas Criação de regiões à medida Criação de regras de monitorização Alertas

81. Roadmap CTP Pública anunciada no MIX a 12 de Abril de 2011 CTP termina no Verão

82. Resumo Traffic Manager Actualmente em CTP Permite Politicas de: Performance Failover Round Robin Resolve problemas de Performance e disponibilidade das soluções

83. Resumo Processo de utilização: Deployment da solução nos vários DataCenters Criação da Politica de Tráfego Utilizar

84. Questões?

85. Próximas reuniões presenciais 09/07/2011 – Julho (Coimbra) 23/07/2011 – Julho (Lisboa) 27/08/2011 – Agosto (Lisboa) 29/10/2011 – Outubro (Coimbra) Reserva estes dias na agenda! :)

86. Patrocinadores desta reunião

87. Obrigado! Nuno Filipe Godinho Consultor Independente Mail: Nuno.Godinho@sapo.pt Nuno.Godinho@itech4all.com Blog: http://msmvps.org/blogs/nunogodinho Twitter: @NunoGodinho

Hinweis der Redaktion

Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Queda da taxa de transferência com o aumento da perda
RTT – Return Trip TimeTaxa de transferência diminuir com RTT
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
Slide ObjectiveUnderstand that Microsoft has a long history in running data centres and online applications. Bing, Live, Hotmail etc….Understand the huge amount of innovation going on at the data center levelSpeaking Points:Microsoft is one of the largest operators of datacenters in the worldYears of ExperienceLarge scale trustworthy environmentsDriving for cost and environmental efficientlyWindows Azure runs in 3 regions and 6 datacenters todayData center innovation is driving improved reliability and efficiencyPUE = Power Usage Effectiveness = Total Facility power/IT Systems Power = Indication of efficiency of DCUnder 1.8 is very good, modern cloud DCs approaching 1.2Multi-billion dollar datacenter investment700,000+ square foot Chicago and the 300,000+ square foot Dublin, Ireland data centersMicrosoft cloud services provide the reliability and security you expect for your business: 99.9% uptime SLA, 24/7 support. Microsoft understands the needs of businesses with respect to security, data privacy, compliance and risk management, and identity and access control. Microsoft datacenters are ISO 27001:2005 accredited, with SAS 70 Type I and Type II attestations.Notes:http://www.globalfoundationservices.com/http://blogs.msdn.com/the_power_of_software/archive/2008/06/20/microsoft-s-pue-experience-years-of-experience-reams-of-data.aspxhttp://blogs.msdn.com/the_power_of_software/archive/2008/06/27/part-2-why-is-energy-efficiency-important.aspx
The numbered steps below correspond to the numbers on the diagram.Performance Times Table built periodically - The traffic manager infrastructure runs tests to determine the round trip times between different points in the world and the Windows Azure data centers which run hosted services. These tests are run at the discretion of the Windows Azure system.Incoming request - Your Traffic Manager domain receives an incoming request from a client machine.Performance table lookup - Traffic Manager looks up the round trip time between the location of the incoming request and the hosted services that are part of your policy using the table created in step 1. Best performing service chosen - Traffic Manager determines the location of the hosted service with the best time. In this example, that is HS-D.DNS name returned - Traffic manager returns the DNS name of hosted service D to the client machine.Service call - The client machine resolves the DNS name to the IP address and calls the hosted service. Points to noteWhen the performance table is updated, you may notice a difference in traffic patterns and load on your hosted services. These changes should be minimal. The DNS Time-to-Live (TTL) informs the Local DNS resolvers how long to cache DNS entries. Clients will continue to use a given hosted service until its local DNS cache expires. Traffic Manager monitors the state of the hosted services in your policies and will not send traffic to those it sees as down. If all hosted services in the policy are detected to be offline, Traffic Manager acts as if all hosted services in the policy are actually online so it will at least resolve the DNS name to an IP address, even though the client machine will call a hosted service that may not respond.
The numbered steps below correspond to the numbers on the diagram.Your Traffic Manager domain receives an incoming request from a client. Your policy contains an ordered list of hosted services. Traffic manager knows which service received the last request.Traffic Manager sends the DNS entry pointing to the next hosted service in the list back to the client. In this example, this is hosted service C.Traffic Manager updates itself to so it knows that the last traffic went to hosted service C. The client machine uses the DNS entry and calls hosted service C. Points to noteThe DNS Time-to-Live (TTL) informs the Local DNS resolvers how long to cache DNS entries. Clients will continue to use a given hosted service until its local DNS cache expires. Traffic Manager monitors the state of hosted services and will not send traffic to hosted services it thinks are down. If all hosted services in the policy are offline, Traffic Manager acts as if all hosted services in the policy are actually online so it will at least resolve the DNS name to an IP address, even though the client machine will call a hosted service that may not respond.
The numbered steps below correspond to the numbers on the diagram.Your Traffic Manager domain receives an incoming request from a client. Your policy contains an ordered list of hosted services. Traffic Manager checks which hosted service is first in the list. It verifies that the hosted service is online. If the hosted service is offline, it proceeds to the next online hosted service. In this case HS-A is offline, but HS-B is online. Traffic Manager returns the DNS entry to the client. The DNS entry points to the IP address of HS-B.The client machine calls HS-B. Points to noteThe DNS Time-to-Live (TTL) informs the Local DNS resolvers how long to cache DNS entries. Clients will continue to use a given hosted service until its local DNS cache expires. Using a failover load balancing method without monitoring is not useful since all traffic will always be sent to the primary hosted service. Traffic Manager monitors the state of your hosted services and will not send traffic to hosted services it thinks are down. If all hosted services in the policy are offline, Traffic Manager returns the DNS name of the primary hosted service.
The numbers in the diagram correspond to the numbered explanation below it.GET - The Traffic Manager monitoring system performs a GET on the file you specify in the relative path area. 200 OK - The monitoring system expects a 200 OK message back within 5 seconds. When it receives this response, it assumes that the hosted service is online. 30 Seconds between checks - It will perform this check every 30 seconds. Hosted service offline - The hosted service goes offline. Traffic Manager will not know until the next monitor check.3 Tries to access monitoring file - The monitoring system performs a GET, but does not receive a response in 5 seconds or less. It performs two more tries at 30 second intervals. This means that at most it takes 1.5 minutes for the monitoring system to detect when a service goes down. If one of the tries is successful, then the number of tries is reset. Although not shown in the diagram, if the 200 OK response(s) come back greater than 5 seconds after the GET, the monitoring system will still count this as a failed check.Marked Offline - After the third failure in a row, the monitoring system will mark the hosted service as offline. Traffic to hosted service decreases – Traffic may continue to flow to the offline hosted service. Clients will experience failures because the hosted service is down. Clients and secondary DNS servers have cached the DNS address of the offline hosted service. They continue to resolve the DNS name of the company domain to the IP address of the hosted service. As DNS servers are updated, traffic to the offline hosted service IP address will stop. The monitoring system continues to perform checks at 30 second intervals and in this example the hosted service does not respond. It remains offline.Traffic to hosted service stops – By this time, most DNS servers and clients should be updated and traffic to the offline hosted service will stop. The maximum amount time before traffic completely stops is dependent on the TTL time. The default DNS TTL is 300 seconds (5 minutes). Using this value, clients stop using the service after 5 minutes. The monitoring system continues to perform checks at 30 second intervals and the hosted service does not respond.Hosted service comes back online – The hosted service comes back online, but Traffic Manager does not know until the monitoring system performs a check.Hosted service receives traffic again - Traffic Manager sends a GET and receives a 200 OK in under 5 seconds. It begins to hand out the hosted services DNS name DNS servers as they request updates. As a result, traffic starts to flow to the hosted service once again.

Windows Azure Traffic Manager

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