An environment is using Veeam Agent for Microsoft Windows and has Microsoft Exchange 2016 with regular database availability groups (DAGs)…

Microsoft Exchange Database Availability Groups (DAGs) are fundamentally built upon Windows Server Failover Clustering (WSFC). To ensure a consistent and successful backup of a DAG using Veeam Agent for Microsoft Windows, the backup job must be specifically configured with the "Failover cluster" job type. This configuration allows Veeam Agent to correctly discover all nodes within the cluster, identify the active database copy for VSS processing, and manage transaction log truncation across the DAG. Selecting this option is the primary requirement for properly backing up the clustered Exchange application.

A. Standalone server: This job type is for single, non-clustered computers and cannot process the distributed architecture of a DAG.

B. Advanced Exchange Backup: This is not a specific configuration option or job type within Veeam Agent for Microsoft Windows.

C. Exchange Processing: This is a sub-option within application-aware processing, but the job must first be set to the "Failover Cluster" type to be applied correctly to a DAG.

1. Veeam Agent for Microsoft Windows User Guide V12

Chapter: "Backup of Failover Clusters"

Section: "How Backup of Failover Cluster Works".

The documentation states

"To back up a failover cluster

you must configure a backup job of the Failover cluster type." It further clarifies that this is necessary for clustered applications like Microsoft Exchange.

2. Veeam Agent for Microsoft Windows User Guide V12

Chapter: "Creating Backup Jobs"

Section: "Job Mode".

This section details the job creation wizard

where the user must select the computer type. For a DAG

the "Failover cluster" option must be chosen.

3. Veeam Backup & Replication User Guide for VMware vSphere V12

Chapter: "Application-Aware Image Processing"

Section: "Microsoft Exchange Server Transaction Log Settings".

This guide explains the underlying mechanism for DAGs: "Veeam Backup & Replication detects the DAG setup and processes the necessary databases from the correct node." This cluster-aware capability is enabled in Veeam Agent by selecting the "Failover Cluster" job type.