Add a logical device to associate with a source system

When setting up replication, adding a logical device is optional. If you do not add a logical device, replicated backups are stored on the default backup device. This works just fine, especially for targets with one replicating source system.

For targets with multiple replicating sources, you can opt to associate sources with specific logical devices. You can associate each source with its own device, or associate multiple sources to a given device, grouping them as desired. If you do not define associations, replicated backups for all sources are stored together on the default device.

Logical device considerations

Before adding a logical device that will be associated to a source system, note the following requirements and considerations:

     The device must support deduplication. Unitrends’ devices support deduplication by default. Note that if you have disabled deduplication, logical device association to a source is not supported.

     The device must be at least 128 GB in size to be used for replicated backup storage. When associating a device to the source system, only devices that meet this size requirement display in the list.

     Once a device is associated to a source, you can remove or modify the association at any time.

     Upon removing the association, subsequent jobs are written to the default backup device. Jobs in progress are not impacted, they are written to the original device.

     Upon modifying the association, subsequent jobs are written to the newly specified device. Jobs in progress are not impacted, they are written to the original device.

     Upon changing the default device (designating another device as the new default), the new default is used for all sources for which an association is NOT defined. No change is made to sources that have been explicitly associated with a device.

     Replicated backups remain on the device to which they were originally written. Modifying or removing an association does not migrate existing replicated backups.

To create a logical device for a replication source

Add a logical device to the replication target as described in To add a device. You will associate the source to this device later in the replication setup procedure.To begin standard replication setup, proceed to Configure the source system role and grant privilege to the target for remote management. For cross-replication setup, proceed to Configure the ST source system for cross-replication and grant management privilege to the ST target.