Proxy node definitions for VSS backups

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Data Protection for Exchange ServerData Protection for SQL Server uses the IBM Storage Protect™ backup-archive client to implement VSS backup operations. As such, you must use two node names for VSS operations; one for the backup-archive client and the other for Data Protection for Exchange ServerData Protection for SQL Server.

As part of the configuration procedure, a proxy relationship is defined for these node names. By default, this proxy relationship is defined when you run the configuration wizard. Follow the guidelines in this topic to manually complete the configuration.

The proxy relationship allows node names to process operations on behalf of another node name. When you register these nodes to the IBM Storage Protect server for VSS operations, specify the IBM Storage Protect USerid=<node name> parameter.

Two types of node names are defined in proxy node relationships:
  • Target node: A node name that controls data backup and restore operations and also owns the data on the IBM Storage Protect server. This node name is specified in the Data Protection for Exchange ServerData Protection for SQL Server dsm.opt file.
  • Agent node: A node name that processes operations on behalf of a target node. This node name is specified in the backup-archive client dsm.opt file.
To establish the proxy relationship, on the IBM Storage Protect server, issue the grant proxynode command. For example:
GRANT PROXYNODE TARGET=dpexc_node_namedpsql_node_name AGENT=dsmagent_node_name
If you are running backups of availability databases in an AlwaysOnAvailability Group on SQL Server 2012 and later versions, a cluster node name is also required.
  • Cluster node: A node name that stores data in a failover cluster or AlwaysOn availability group configuration.
To establish the proxy relationship, on the IBM Storage Protect server, issue the grant proxynode command. For example: 
GRANT PROXYNODE TARGET=alwayson-node agent=tdpsql-node
GRANT PROXYNODE TARGET=alwayson-node agent=dsmagentnode
GRANT PROXYNODE TARGET=tdpsql-node agent=dsmagentnode
If you are running backups of availability databases in a Database Availability Group (DAG) on Exchange Server 2012 and later versions, a cluster node name is also required.
  • Cluster node: A node name that stores data in a failover cluster or DAG configuration.
To establish the proxy relationship, on the IBM Storage Protect server, issue the grant proxynode command. For example: 
GRANT PROXYNODE TARGET=dag-node agent=dpexc-node
GRANT PROXYNODE TARGET=dag-node agent=dsmagentnode
GRANT PROXYNODE TARGET=dpexc-node agent=dsmagentnode