NEC Express5800 series User Manual page 182

Backup Device
The server has one slot for installing a backup device such as a magnetic tape drive.
IMPORTANT:
You don't need additional SCSI controller card to connect your
SCSI backup device. Use the built-in SCSI controller ports provided
with the NEC Storage.
Set "OFF" for the terminating resistor of the backup device you are
going to install, and set a SCSI ID different from those of other
devices. For the settings, see the manual provided with the server.
Install only a backup device specified by NEC.
The size of a backup device which can be installed in this server is
as follows:
Width: Up to about 9 cm (3.5 inches)
Height: Up to about 4 cm (1.6 inches)
172 Upgrading Your NEC Storage
Backup device