What is a temporary disk?
A temporary disk is storage that’s attached directly to the deployed VM. Data on a temporary disk is lost once the VM is shut down. If you need persistent storage, there are a number of types and sizes of persistent data disks available, which are charged for separately. Please see storage pricing for information. For persistent VM storage, we recommend that you use Managed Disks to take advantage of better management features, scalability, availability and security.