Array Rear View
The rear of the base unit provides access to the base unit’s two power supply modules (PS 0 and PS 1) and
two controller modules (Controller 0 and Controller 1), as seen in Figure 4 below.
Figure 4. Base Unit Rear View
Power Supply Status LEDs
There are three status LEDs on each power supply that include, from left to right, a power-on LED, a power
fault LED, and a fan fault LED, which indicate the status for each power supply module as follows.
LED
Indication
Description
Power On LED
Solid Green
When lit, indicates that the power supply is on
Solid Orange
Indicates that a fault condition exists in the power supply itself
Power Fault
LED
Blinking Orange
Indicates that there is an abnormal thermal condition in the power supply
or that the other power supply bay is empty
Fan Fault LED
Solid Orange
When lit, indicates that a fault condition exists in the power supply’s fan
Table 4. Power Supply LED Status Conditions
Controller SAS Port
The SAS ports are used to connect the base unit to additional disk enclosures and have two Status LEDs, a
green Link LED on the left and an Orange Fault LED on the right.
Fibre Channel Host Ports
The ports labeled HP and HPE on the base unit controllers are Fibre Channel Host Ports (FC Ports) that
are used to connect the array to the application servers. There are two FC Ports standard on each
controller. The number of FC ports can be expanded to four or six ports per controller on D3 base units with
Host Port Expansion (HPE) options.
Management and Maintenance Ports
The management port provides the network connection for the management server. The maintenance port
is only for use by NEC-authorized service professionals.
NEC D3/D4 Quick Start Guide
5
Power Supply Cable Clamp
Power Supply Status LEDs
PS 0
PS 1
Controller 1
Controller 0
SAS Ports and LEDs
Power Button
Management LAN Port
Maintenance Port
FC Host Ports
Controller Status LEDs
