NEC M120 Setup Manual page 10

[Optional]
Disk enclosure
7-3-4 Disk Enclosures
DP-OUT
Disk port (DP-OUT)
To Disk Enclosure on next level
• When connecting a SAS cable, be sure to insert the connector in the correct direction. Connect the SAS cable so that the
pull tab faces up.
Note that the direction of the connector is opposite from that of the SAS host port. In the case of the SAS host port, the
pull tab must face down.
• SAS cables have grooves in the connector that protect against incorrect insertion. Push the connector of the SAS cable
into the port securely until you hear a click. If you feel some resistance, the direction of the connector may be wrong. In
this case, do not insert the connector forcibly. Check the direction of the connector.
• When the connector has been inserted to the port correctly, it cannot be removed unless you pull the tab.
•
If the link LED of the disk port does not turn on, or if the fault LED turns on, the direction of the connector may be wrong.
• A disk enclosure does not power on if both SAS cables are disconnected.
•
When removing a SAS cable, be sure to remove the connector by pulling the pull tab straight along the cable.
Note: Connect the power cable to the outlet after the connection of other cables is completed.
To power outlet
Power plug
Disk port (DP0-IN)
DP0-IN
To Disk Array Unit or
disk enclosure closer to Disk Array Unit
※A port next to DP0-IN is not used
Disk port
・Disk Enclosure
・Disk Array Unit
Reference：
SAS Host port
・Disk Array Unit