Hi,
The Azure calculator above is the best way to calculate your costs.
As soon as you enable backup, you will get billed the following:
The cost of the protected instance
Azure will charge per protected instance (per virtual machine in your case). The cost varies based on the size of the VM:
0.5 instance is charged for VMs that uses up to 50GB of total storage
1 instance is charged for VMs that uses between 50GB and 500GB of total storage
an additional instance is charge for every 500GB of total storage thereafter.
a few examples:
- a virtual machine with one 32GB disk attached will be charged 0.5 instance
- a virtual machine with one 128GB disk attached will be charged 1 instance
- a virtual machine with one 128GB disk and one 512GB disk attached will be charged 2 instances
The cost of storage used in the vault
In addition to the instances charge, you will also be billed for the storage used in the Recovery Services Vault.
This cost is charged per GB. Depending if you selected LRS or GRS for the vault itself, the cost will vary.
Keep in mind that costs does vary in general based on the location of resources.
Hope this helps,
Stephane