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Difficulty: EasyAzure Virtual Machine Recovery and Restore

You have an Azure virtual machine named VM1 that is backed up to a Recovery Services vault. A critical operating system corruption occurs, and VM1 fails to boot. You need to restore VM1 from a backup. The restored virtual machine must retain the original resource ID, network interface cards (NICs), and IP configurations of VM1. Which restore option should you select?

  1. Replace existingAnswer
  2. B
    Create new
  3. C
    Restore disks
  4. D
    Item-level recovery

Answer

Replace existing
The correct option is 'Replace existing'. When restoring an Azure VM using Azure Backup, the 'Replace existing' option is designed to swap the corrupted disks of the existing VM with the disks from the selected restore point. This process preserves the VM's hardware configuration, resource ID, network interface cards (NICs), and IP configurations.

Step-by-Step Solution

1
Identify the primary requirement: restore a corrupted, non-bootable VM while retaining its original identity and network configuration (resource ID, NICs, IP addresses).
Requires a restore method that keeps the existing VM configuration shell intact.
Creating a new VM changes these configurations, whereas restoring disks requires manual rebuilding.
2
Evaluate the Azure VM restore options: 'Create new', 'Replace existing', and 'Restore disks'.
The 'Replace existing' option swaps the OS and data disks on the current VM with those from the restore point, keeping all metadata and network interfaces unchanged.
This directly satisfies the requirement with minimal administrative effort and zero configuration drift.

Key Concept

Azure VM restore options allow administrators to choose between creating a new VM, replacing disks on the existing VM, or restoring VHDs to a storage account. To retain the exact virtual machine shell (resource ID, NICs, and IPs), the 'Replace existing' option must be used.
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Topics

Azure Virtual Machine Recovery and Restore

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