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Severity : Medium

Description: When a virtual machine (VM) in Azure is deleted, by default, any disks that are attached to the VM aren't deleted. Those disks need to be deleted to save cost for unused resources. Remediation Steps : Ensure that there are no unattached virtual machine disk volumesThis control ensures that disk volumes in the account are all attached to virtual machine or marked for deletion. By default Virtual machines disk volume are not deleted when VMs are deleted, leaving unattached volumes in the account. These unattached disk volume cause unexpected charges may allow that of data by unintended use by allowing unwarranted access to these disks volume.

Remediation Steps:

Perform following to configure delete unattached disk volumes :

1. Login to Azure Portal using https://portal.azure.com.

2. Navigate to All resources.

3. Search for and select Disks.

4. From the list of disks , select the disk to delete.

5. Confirm that Disk State is Unattached.

6. Select Delete.

Important:

Reference:

• https://docs.microsoft.com/en-us/azure/virtual-machines/disks-find-unattached-portal