You have an on-premises server named Server1 that runs Windows Server and has the Hyper-V server role installed. You have an Azure subscription. You plan to back up Server1 to Azure by using Azure…

MABS is required for Bare Metal Recovery (BMR) backups of on-premises servers to Azure, as it provides the comprehensive capabilities to capture the entire server's operating system, applications, and data for full system restoration.

Files and folders can be backed up directly to Azure using the Azure Recovery Services agent (MARS agent) without requiring MABS.

MABS is necessary for backing up the System State of on-premises Windows Servers, enabling granular recovery of critical operating system components like Active Directory, COM+ class registration database, and registry.

While MABS can perform host-level backups of Hyper-V VMs, the question asks which options *require* MABS; comprehensive Hyper-V VM protection often leverages MABS but basic file/folder backup inside VMs can be done with the MARS agent.