What Is Backed Up for Windows File Servers?

You can backup the data that resides on your client computer and restore it when required.

Component	What Is Backed Up
File System Thumb drives are not backed up. Locked files (files that are locked by applications or system programs while they are in use) are backed up using snapshots.	File Allocation Table (FAT) file systems New Technology File Systems (NTFS), including Encrypting File System (EFS) Transactional File Systems Distributed File System (DFS) data Oracle ASM Cluster File System (Oracle ACFS) Resilient File System (ReFS) on Windows Server 2012 and Windows Server 2016 computers. Nutanix Acropolis File Services (AFS) USB drives that are fixed disks Cluster Shared Volume Data Deduplication-Enabled Volumes
File System Elements	Universal Naming Convention (UNC) Paths Mount Points Encrypted files Compressed Data Shared Volumes Share with Mac data Single Instance Storage Remote Storage Service
System State System State is backed up automatically for the default subclient. Offline files will not get backed up if the client computer has Unified Extensible Firmware Interface (UEFI).	System File Protection catalog and files Performance monitor configuration files Active Directory Registry Quotas SYSVOL (if this is a domain controller) Certificate Services database (if this is a certificate server) Cluster database (if this server is part of a cluster) COM+ database Terminal Server Licensing database RSM database WMI database DHCP WINS IIS UDDI (only with Windows Server 2003 using VSS) Disk quota information Event logs Content Indexing catalogs Network Policy Server (NPS) 1-Touch Component Task Scheduler Quorum data on the physical node of the cluster
Third-Party Software encrypted data	Data encrypted using McAfee Endpoint Encryption.

Additional Notes

Data from the Web Server on Windows Server 2012 is not backed up.
Response File Group Configuration is not backed up when you back up the Lync Server. For more information about backing up Response File Group Configuration, refer to http://technet.microsoft.com/en-us/library/hh202170.aspx.
By default, the directory junction point is backed up but the source data (data linked to junction point) is not backed up. This prevents undesired backup and restore of system created directory junction points. To back up the source data of a junction point that is not part of a subclient contents, the source data must be explicitly added to a subclient's content.