Accelerator and the Windows change journal
For Windows NTFS and ReFS file systems, the Accelerator uses the Windows change journal to help identify the files that changed since the previous backup.
The extent to which the Windows change journal is used depends on the following:
Whether the option has been enabled for the NetBackup client.
Whether the policy contains a schedule with the option enabled.
Note:
Regardless of the setting or the setting, the Windows change journal always helps determine if a file has changed.
Table: How Accelerator uses the Windows change journal
NetBackup configuration | Accelerator use of change journal |
|---|---|
The option is not enabled | For full backups and incremental backups, NetBackup examines the metadata for every file to determine if the file has changed. Even without the option, the Windows change journal helps determine if a file has changed. |
The option is enabled but the option is not enabled on any of the policy's schedules | The Windows change journal helps determine if a file has changed during both full backups and incremental backups.
|
The option is enabled and the option is enabled on at least one of the policy's schedules | The Windows change journal helps determine if a file has changed during both full backups and incremental backups.
|