database and public endpoints redundancy on azure (cloudbrew)

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RADU VUNVULEA MCTS MCP BANK HOME AUTOMATION

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WCF WPF ENTHUSIASTIC

redundancy Microsoft Azure minimum cost

Information

Error detection

Correction

Time

Transient Fault Detection

Software

N-versions Programming

Hardware

Dual Modular Redundancy

Triple Modular Redundancy

Time

Transient Fault Detection

Software

N-versions Programming

Hardware

Dual Modular Redundancy

Triple Modular Redundancy

Information

Error detection

Correction

Software

N-versions Programming

Hardware

Dual Modular Redundancy

Triple Modular Redundancy

Information

Error detection

Correction

Time

Transient Fault Detection

AUTOMATION

• Free

• DNS

<LoadBalancerProbes> <LoadBalancerProbe

name="FooProbe" protocol="http"

intervalInSeconds="30" path="/api/probe" port="80"

timeoutInSeconds="60" /> </LoadBalancerProbes>

• VM, Web/Worker Roles, DB and many more

• External Endpoints

• Is not FREE (1B DNS query = $0.75)

• DNS TTL

• Compute 99.95% 21.6m

• SQL Database 99.90% 43.2m

• Storage 99.90% 43.2m

• Storage (RA-GRS) 99.99% <8m

• Active Directory 99.90% 43.2m

• Cache 99.90% 43.2m

• VM 99.95% 21.6m

• Service Bus 99.95% 21.6m

• Downtime per month: 216m21.6*2+43.2*4=216m

• Downtime per month: 216m21.6*2+43.2*4=216m

• Downtime per month: 0.5%(100/43200)*216=0.5%

• Downtime per month: 216m21.6*2+43.2*4=216m

• Downtime per month: 0.5%(100/43200)*216=0.5%

• Uptime: 99.5%100-0.5=99.5%

• Compute 99.95% 21.6m

• SQL Database 99.90% 43.2m

• Storage 99.90% 43.2m

• Storage (RA-GRS) 99.99% <8m

• Active Directory 99.90% 43.2m

• Cache 99.90% 43.2m

• VM 99.95% 21.6m

• Service Bus 99.95% 21.6m

Relay

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12

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CHECK HEALTH STATUS OF

OTHER SERVICES

M T B F

M T T R

Question

Answers

{“name” : “Radu Vunvulea,

“blog” : “vunvulearadu.blogspot.com”,

“email” : ”vunvulear@outlook.com”,

“socialMedia” :

{

“twitter” : “@RaduVunvulea”,

“fb” : “radu.vunvulea”

}

}