where db_vol is the name of the volume where the database LUN is located and db_lun is the name of the database LUN.
You can either backup the entire LUN via ndmp to tape or you can also use SnapDrive CLI commands in a pre-job script on the backup to mount the contents of the LUN in the snapshot and then backup the flat files within the LUN that was mounted.
Please review the SnapManager backup archiving information starting on page 245 of the SME 6.0.3 IAG or TR-4051.
The snapshot is located in the volume where the Exchange LUNs are located. NetApp snapshots do not consist of data being copied.
If you are not sure which controllers and volumes where the Exchange LUNs are located, you can run the SnapDrive "scdli disk list" command from a command prompt on each Exchange mailbox server that is being backed up by SME. The output from this command will give you the path of the volumes and LUNs, including the controller where the mount points are mapped to.
Snapdrive can support a single host being connected to multiple NetApp controllers.