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Chapter 3 Installing the DSN-4000 Series PrimaryArray
3.8
Connecting the AC Power Cords
The DSN-4X00 storage system has two AC power receptacles. Both must be connected to an
AC power outlet.
1.
Plug the female end of one power cord into one of the 3-pronged power connectors on
the back of the DSN-4X00 storage array. Plug the other end of the power cord into a
working AC power outlet that is not controlled by a wall switch.
2.
Repeat the previous step using the second power cable and power receptacle on the
DSN-4X00 storage array. For best results, the second power receptacle should be on a
different circuit.
Although the DSN-4X00 storage array can operate temporarily with only one
AC power connection, an audio alarm will sound until both power supply
units are powered on or until the MUTE button is pressed.
3.9
Connect any DSN-4000 JBOD Expansion Arrays (optional)
You can connect up to four additional DSN-4000 JBOD expansion array with 16 drive bays
each to increase the physical storage capacity of your DSN-4X00 storage system, up to a
maximum of 80 drives.
If the DSN-4000 JBOD expansion array will be installed on a desktop or shelf, locate the
expansion array close to the DSN-4X00 primary array, with sufficient ventilation space
between the expansion array and any other objects in the vicinity. Do not block the air
vents on the front and back of the DSN-4000 JBOD expansion array enclosure. Install the
cables and power cords according to the procedures in the following sections.
If the DSN-4X00 primary array will be mounted in a rack, mount the DSN-4000 JBOD
expansion array in the same rack, either above or below the primary array. For information
about installing the system in a rack, refer to Appendix B and the documentation for the
rack.
The rack cabinet must provide sufficient airflow to the front and back of the
DSN-4000 JBOD expansion array to maintain correct cooling. It must include
ventilation sufficient to exhaust the heat generated by equipment installed
in the rack.
To connect the first DSN-4000 JBOD expansion array to the DSN-4X00 primary array, use the
following procedure and refer to Figure 3-3.
1.
Facing the rear of the primary array, connect one end of the expansion chassis cable
that was supplied with the DSN-4000 JBOD array to the expansion connector labeled
SAS
EXP
and ensure that it snaps fully into place.
2.
To attach additional expansion arrays, use the expansion cable that was supplied with
the DSN-4000 JBOD array between the
SAS OUT
connector (diamond icon) on one
expansion array and the
SAS IN
connector (circle icon) on the next expansion array.
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