Using multiple datastreams with Exchange Database Availability Groups (DAG)s

When you back up databases in a Database Availability Group (DAG), NetBackup selects the server to back up each database according to your data source and preferred server list settings. The backup jobs are grouped by server. From your backup selections list, all of the databases that have passive copies on a given server are grouped under one snapshot job. They are then backed up by one or more child backup jobs. All of the databases that have active copies on the server are grouped under another snapshot job, followed by one or more backup jobs.

Note:

Use explicit NEW_STREAM directives in a DAG only when you are confident which servers will back up which databases.

The NEW_STREAM directive works as follows:

More Information

Using wildcards in an Exchange backup selections list

Performing Exchange backups with multiple data streams