Dell EMC Avamar for Windows Servers 19.7 User Guide

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Backup options

The following avvss options are available for the backup operation.

Table 1. Backup options for the avvss command
Option	Description
--ddr={true \| false}	Specify true to store the backup on a Data Domain system instead of the Avamar server.
--ddr-index=`n`	Specifies the index number of the Data Domain system. The index is the order in which the Data Domain systems were added to the Avamar server configuration.
--dr-cluster-disk-warning={true \| false}	Specify true to complete the backup with exceptions if components are on cluster disks. Specify false to disable the warning. The default value is true.
--dr-exclude-win32-services-files= {true \| false}	Specify true to ignore third-party services when identifying critical volumes. This feature is supported if the System Writer contains the Win32 Services Files component.
--exclude-non-critical-dynamic-disks={true \| false}	Specify true to exclude noncritical disks from system restore preparation to avoid reformatting the disks. The default value is true. According to Microsoft Best Practices, if any dynamic disk is critical, then the entire dynamic disk pack should be treated as critical and included in the backup. If you specify this option, then you may need to use the `--exclude_non_critical_disks` option during the offline disaster recovery.
--expires=`{days \| timestamp}`	Specifies backup expiration as a number of `days` from today or an absolute `timestamp`.
--perform_dr_backup={true \| false}	Specifies whether to create a BMR backup. The default value is true.
--retention-type=`type` --retentiontype=`type`	Assigns advanced retention to the backup. Specify one of the following values: none — Do not explicitly assign any retention type to this backup. That is, treat the backup as a normal on-demand backup. daily — Explicitly designate this backup as a daily backup. weekly — Explicitly designate this backup as a weekly backup. monthly — Explicitly designate this backup as a monthly backup. yearly — Explicitly designate this backup as a yearly backup.
--vss-ignore-missing-windows-files={true \| false}	Set this option to true to ignore any missing VSS writer files during the backup. Backups fail if VSS writers contain files that do not exist on the computer.