Azure Fundamentals (AZ-900)

Last Updated: 3/1/2023

Exercise - Azure Availability Sets

  • You have to make sure that VM is part of availability set which automatically ensures it is located in right fault or update domain.
  • Your availability set is automatically managing the spreading of the machines across the fault and the update to domains.

Create New VM 1

  • Go to portal
  • Create VM
  • Enter name: demo-vm1
  • Choose region
  • Availability options: Availability set
  • Create new availability
    • Name: demo-availset
    • Fault domains: 2
    • Update domains: 2
    • Ok
  • Image: Windows server 2019 datacenter
  • Username: demouser
  • Review and create

Create New VM 2

  • Enter name: demovm-2
  • Availability options: Availability set
  • Choose availability set: demo-availset
  • Review and create

View Resource

  • Go to All Resource
  • Select availability set: demo-availset

Important Points

  • You can specify only at the time of creating VM.
  • You can't add an existing VM to an availability set.
  • Availability set provides fault tolerance at server level not at app level. Syncing at app level should be done by yourself. Provides high availability at infrastructure level
  • You can't choose the fault or update domain. Max Fault domain - 3, Max Update domain - 20
  • Different VM size and VM type (Linux/Windows) can be added to Availability Set
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