Windows 2000 & up options (only if supported by the Windows operating system version) • Note: The defaults are OFF for all of these options. If you select any of these options, the backup data will increase. | |
Backup data in Remote Storage | Backup all data on remote media. Some Windows operating systems have the functionality to migrate infrequently accessed data from the local hard drive to directly attached tape libraries. The local disk usage is reduced by replacing the file with a link (shortcut). If disabled, only the link (shortcut file) will be backed up. |
Backup Single Instance Store / Data Deduplication file data | Backup each instance of a file separately. Some Windows operating systems have an optional service 'Single Instance Store' to handle multiple copies of the same file on the computer. Local disk usage is reduced by placing one copy of the file in the Single Instance Store, with links (shortcuts) in all associated directories. If disabled, only the link will be backed up. If you have activated the Single Instance Store Service, check this option. • For Windows 2012 servers, this option covers the Windows “Volume Data Deduplication” feature. For more information, see the Knowledge Base article in “Backup / Restore of Windows 2012”. |
Follow junction points | Backup directories (all data) represented by the junction point. Junction points are file links to other directories. If disabled, DS-Client will backup only the link (shortcut) Notes: • Junction points that are mounted FAT or FAT32 volumes are not supported. |
Volume Shadow Copy • Windows computers only (if supported by the operating system version) | |
Backup through volume shadow copies | DS-Client will initiate a VSS (Volume Shadow Copy Service) snapshot for the specified computer (for any local volumes included in the backup) and perform the backup from the VSS snapshot. • If the VSS snapshot fails, DS-Client tries to backup like a File system backup set. • For more information about VSS, refer to the corresponding Windows Help. |
Do not involve writers | By default, the DS-Client will make each writer commit its data before doing the VSS snapshot (e.g. Registry, SQL Server and other applications are VSS Aware and can freeze their own I/O while the snapshot is performed). • If you check "Do not involve writers", it means that the DS-Client will not notify the VSS Aware applications that a backup is performed and the resulting backup will be only crash-consistent (i.e. it will contain whatever was on the hard disk during the backup). • For more information about VSS, refer to the corresponding Windows Help. |
Do not process components | By default, VSS backups are performed with the ‘process components’ option. Processing components means verifying if their files or their dependent component files are all included in the volumes selected for snapshot. • By default, this option is off. If selected, the VSS snapshot will be performed without processing components. • This option is useful if you have selected only a portion of a component for backup and do not want to encounter errors (because the VSS verification would otherwise detect missing files or dependencies). |
Exclude some writers / components | If you select this option, you can manually select specific VSS writers or components on the target source that will not be used. This has the same effect as choosing ‘Do not involve writers’, but only for those writers or components you specifically choose. • Click [>>] to open the "Select VSS Writers or Components" screen. |
Pure file data backup options • This section only applies to Windows File system backup sets. | |
Non-filtered share data backup | The default is OFF. This option controls the automatic file filtering performed by the DS-Client during Windows file system backups. By default, the Windows DS-Client will exclude some files automatically out of the share-based backup of files, even if such files would be readable (e.g. when using VSS). The excluded files may include: • temporary files (e.g. pagefile.sys) • files that are being backed up as part of “System State” backups (e.g. operating system DLLs, executable) • Registry hive files • Other files that may interfere with a successful Agentless BMR This option should usually remain unchecked, unless there are specific reasons why all such excluded data would need to be included in the share-based backup. Selecting this option will interfere with the ability to perform Agentless BMR without manual file filtering, however it may be used in conjunction with the VSS option to allow bootable-disk BMR (this requires 3rd-party BMR provisioning integration). It is recommended that unless BMR provisioning is supported by your installed DS-Client, you should leave this option unchecked. |
Backup strategy for backed up files • This covers how DS-Client handles files that are already backed up. | |
Force backup even if the modified time and size did not change | If selected, DS-Client will force a re-backup of a file, even if its “last modified” time and size have not changed since the last backup. |