Final answer:
For Azure Backup to a Recovery Services vault, there's a 4 TB size limitation for managed disks. Only DiskA (512 GB) and DiskD (2.0 TB) fall within this limit and can be backed up to vault5, whereas DiskB (30 TB) and DiskC (26 TB) exceed the limit and cannot.
Step-by-step explanation:
The question concerns backing up data disks of an Azure Virtual Machine to a Recovery Services vault. In Azure, the limit for the size of the disks that can be backed up using Azure Backup to a Recovery Services vault is specifically 4 TB for managed disks. The sizes of the disks you've listed range from 512 GB to 30 TB.
Considering the disk size limitations for Backup in Azure, the only disks that can be backed up to vault5 are:
- Disk A with a size of 512 GB
- Disk D with a size of 2.0 TB
Therefore, Disk B and Disk C exceed the backup size limit and cannot be backed up to vault5. The correct answer is that you can back up Disk A and Disk D to vault5.