While both Veeam Agent for Microsoft Windows and Veeam Agent for Linux support application-aware processing, the implementation and supported applications differ significantly. The feature exclusive to the Windows agent is the deep, Microsoft Volume Shadow Copy Service (VSS) based integration for Microsoft enterprise applications, including Microsoft Exchange, Microsoft SharePoint, and Microsoft Active Directory. Veeam Agent for Linux provides application consistency for databases like Oracle and PostgreSQL and uses pre-freeze/post-thaw scripts for others, but it does not support VSS-based processing for the aforementioned Microsoft applications. Therefore, this specific capability is unique to the Windows agent.

B. Backup from storage snapshots: This feature is available for both Veeam Agent for Microsoft Windows (Server edition) and Veeam Agent for Linux (Server edition).
C. Volume backup: This is a fundamental backup mode available in Veeam Agents for Microsoft Windows, Linux, and macOS.
D. File-level backup: This is a fundamental backup mode available in Veeam Agents for Microsoft Windows, Linux, and macOS.

1. Veeam Help Center for Veeam Backup & Replication v12

"Veeam Agents Feature Comparison": This official comparison table details the features across different agents. Under the "Application-aware processing" row

it lists "Microsoft Active Directory

Microsoft SQL Server

Microsoft SharePoint

Microsoft Exchange" exclusively for the Windows agent. It also confirms that "Backup from storage snapshots

" "Volume-level backup

" and "File-level backup" are available for both Windows and Linux agents.

Source: https://helpcenter.veeam.com/docs/backup/agents/agentsfeaturecomparison.html?ver=120 (Section: Data Protection)

2. Veeam Agent for Microsoft Windows User Guide (v6.0)

"Application-Aware Processing": This guide describes the VSS-based mechanism used for ensuring transactional consistency of applications running on Windows machines.

Source: https://helpcenter.veeam.com/docs/agentforwindows/userguide/imageprocessing.html?ver=60 (Section: Application-Aware Processing)

3. Veeam Agent for Linux User Guide (v6.0)

"Application-Aware Processing": This document explains that for Linux

application-aware processing relies on pre-freeze/post-thaw scripts or native database processing for supported applications like Oracle and PostgreSQL

which is a different mechanism than the VSS integration in Windows.

Source: https://helpcenter.veeam.com/docs/agentforlinux/userguide/imageprocessing.html?ver=60 (Section: Application-Aware Processing)