Availability

• High Availability with in a Region:
  • Can be acheived using redundancy
• In Azure We can acheive this using

  • Availability Zones:

  • Availability sets:

    • Fault Domain:
      • Each physical rack in the data center can be considered as a Fault domain.
    • Update Domain:
      • An update domain is a group of underlying hardware that can be rebooted or undergo maintenance at the same time
• Practical Availability Zone:
• Practical Availability Set:

Exercise-1:

1. Create a Resource group
2. Create two vms one in zone 1 and other in zone2 (try using same image and size as B1s)
3. Delete the resource group

Exercise-2:

1. Create a Resource group
2. Create two vms in one availability set with 2 fault domains and 2 update domains (try using same image and size as B1s)
3. Delete the resource group

Dedicated Hosts

• Azure Dedicated Host is a service that provides physical servers where you will be able to host one or more vms (belonging to one subscription.)
• Virtual machines can be launched on Dedicated hosts which can be grouped into host groups
• Pricing of the Dedicated Hosts are generally more Refer Here
• Virtual Machine Scale Sets are not supported in the Dedicated Hosts

Play with Pricing Calculator

• Refer Here for azure pricing calculator