Chapter 4: Subsystem Operation and Monitoring
4.2 Status-indicating
LEDs
4.2.1 LED Overview
All FRUs (Field Replaceable Units) have status-indicating LEDs that reflect
the operational status and integrity. The list in
Table 4-1
shows the number
of LEDs that reside on each component.
Component
LEDs per
Module
Total LEDs
Definition
LCD Keypad
Panel
3 3
See
Section 4.2.2
Drive Trays
2 32
See
Section
4.2.3
Controller
Modules
7
14 or 7 (single-
controller)
See
Section 4.2.4
Fibre Port
2
24 or 16
See
Section 4.2.4.2
Ethernet Port
2
4 or 2
See
Section 4.2.4.4
BBU
1
2 or 1
See
Section 4.2.5
PSU
1 2
See
Section 4.2.6
Cooling Module
2 4
See
Section 4.2.7
Table 4-1: LED Distribution
LED definitions are given in the following sections.
4.2.2 LCD Keypad Panel
The LCD keypad as shown in
Figure 4-1
consists of five (5) function keys,
three (3) LEDs, and a 16-character x 2-rows LCD screen that provides
access to firmware-embedded utility. Press the
ENT
button for two (2)
seconds on the initial screen to enter the main menu. Press the
ESC
button
to clear the current event.
Function Keys:
Press the
UP
and
DOWN
arrow keys to select viewing items. In
the last of the main menu items, “View and Edit Event Logs,” the
most recent event is displayed first.
Status-indicating LEDs
4-3
