This can be a system with ARCserve Backup or the Client Agent for Windows installed
For more information about how to back up, restore, and edit the registry, please review the relevant Microsoft Knowledge Base articles on.
Before you modify the registry, make sure to create back up of the registry and ensure that you understand how to restore the registry if a problem may occur. Description: By default ARCserve Backup skips files in folders configured as File System Device (FSD) The following Informational message is seen in the Activity Log: 'Skip File System Device home directory F: FSD1.' Solution: IMPORTANT: This article contains information about modifying the registry.