Availability sets

Question

Hello, For build VM avaiability set we must create at least 2 VMs for each application, right? I just want to know if there are 2 VM identical for each app, will both VM replicated each other automatically by Azure? I mean if i do some changes on the app or the OS, should i do exact same changes on another VM?

Answer 1

Hi,

Yes, for more resilience to failure you would need at least 2 VMs for the workload/application when using Availability Sets.

No, the VMs will not replicate changes to each other automatically. The apps/workloads running inside of the VMs need to be designed to replicate/sync/share data between each other, -OR- the apps/workloads need to be stateless.

-TP

Answer 2

Hi @Handian Sudianto ,

... will both VM replicated each other automatically by Azure?

No, there is no automatically sync between the 2 VMs.

... should i do exact same changes on another VM?

Yes, that's the best option. But you have to do this manually.

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Regards

Andreas Baumgarten