The Celerra File Server supports up to a maximum of four simultaneous backup operations on an NDMP Host Data Mover. You can connect multiple Host Data Movers to the same tape library unit. The tape library unit can have multiple SCSI host connections. The tape library unit can also have fibre-channel connections.
Note: Do not connect the Celerra File Server Control Station to the tape library unit.
For each tape library unit SCSI connection, you can attach a maximum of two drives. You cannot daisy-chain any of the Host Data Mover storage system SCSI connections to the tape library unit.
If an NDMP Host Data Mover fails over to its standby, you must physically connect the Host Data Mover's tape library unit cable to the standby.
The ability to connect a Host Data Mover to a tape library unit depends on the number of SCSI ports on a Host Data Mover. Some older models of a Host Data Mover may have only two SCSI ports. These are required for storage system connectivity and redundancy. You should not use these storage system SCSI ports for tape library unit connections.
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