You are designing the deployment of a new Azure Virtual Machine (VM) named `VM-DB1` in the… — Microsoft Azure Administrator (AZ-104)

You are designing the deployment of a new Azure Virtual Machine (VM) named `VM-DB1` in the East US region. The VM will host a database workload with the following requirements:
- High availability with protection against datacenter-wide failures.
- A data disk that supports $40,000$ IOPS and $600$ MB/s throughput.
- Full VM backups containing all disks using an Azure Recovery Services vault.

To meet these requirements, you plan to deploy `VM-DB1` to Availability Zone $1$ , enable Ultra Disk compatibility on the VM, attach an Ultra Disk as a data disk, and configure a backup policy in a Recovery Services vault located in the East US region.

Which of the following statements correctly identifies the constraint that will prevent this deployment plan from being completed as designed?

Azure Backup does not support backing up virtual machines that have Ultra Disks attached.Answer
B
Ultra Disks can only be attached to virtual machines deployed within an Availability Set, not in an Availability Zone.
C
The Recovery Services vault must be deployed in a different region than the virtual machine to support Ultra Disk backup.
D
The Recovery Services vault cannot access the VM because the default storage account firewall blocks trusted Microsoft services.

Answer

Azure Backup does not support backing up virtual machines that have Ultra Disks attached.

The correct option is that Azure Backup does not support backing up virtual machines with Ultra Disks attached. When configuring VM-level backup using a Recovery Services vault, the backup operation will fail if the VM has an Ultra Disk attached, unless that specific disk is excluded from the backup scope.

Step-by-Step Solution

Analyze the storage performance requirement.

The requirement of

40,000

IOPS and

600

MB/s throughput on a single disk exceeds the limits of standard disk types but is supported by Ultra Disks or Premium SSD v2.

This determines that the choice of using an Ultra Disk is technically necessary to meet the performance criteria.

Evaluate the high availability requirement.

Deploying the VM in Availability Zone

1

meets the requirement for protection against datacenter-wide failures and is compatible with Ultra Disks.

This verifies that the availability configuration is correct and supported.

Evaluate the backup requirement.

Azure Backup does not support virtual machine-level backups for VMs with Ultra Disks attached.

This identifies the bottleneck in the configuration where the full VM backup will fail unless Ultra Disks are excluded.

Key Concept

Azure Virtual Machine backup limitations with Ultra Disks

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

Topics

More questions from this topic