Backing Up Data › Using Global and Local Backup Options › How the Agent Processes Incremental and Differential Backups on VMware Virtual Machines

How the Agent Processes Incremental and Differential Backups on VMware Virtual Machines

The agent uses the following file properties as the file selection criteria for incremental and differential backups:

• File creation or modification date--VDDK communication backups.

  The agent communicates with the VM using VDDK. The agent detects and filters data based on file creation time or modify time. Using this communication method, the agent backs up all files with a creation time or modified that is later than the last full or incremental backup time, regardless of the file attributes.

• Archive bit--Client Agent for Windows communication backups.

  The agent communicates with the VM using the Client Agent for Windows. The agent detects and filters file based on the archive bit. If the agent detects system state files and files statused "FilesNotToBackup," the agent excludes the detected files from the incremental or differential backup.