Specifications

Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual

manager should use either the LCD keypad panel or a terminal software running on

a PC to determine the cause of the alarm and take the appropriate corrective

measures.



C: The I

C bus monitors the operational integrity of the cooling fan, temperature

sensors, and PSU modules (present/not present, ready/failed, etc.).

Subsystem monitoring is a necessary part of subsystem management. When failure events

or other disruptive events are detected and reported, the subsystem manager must take

appropriate actions to rectify the problem. Failure to act in a properly specified manner to

a system event (such as overheating) can cause severe and permanent subsystem damage.

3.2. Status-indicating LEDs

3.2.1 Brief Overview of the LEDs

All FRUs (Field Replaceable Units) have status-indicating LEDs that show the

operational status and integrity of the subsystem components. The list in Table 3-1 shows

the number of LEDs assigned to each component.

Component No. of LEDs/Component Total LEDs

Controller Modules

4 4 (1 controller)

PSU Module

1 3 (3 PSU modules)

Cooling Module

2 4 (2 cooling modules)

LCD Panel

3 3 (1 LCD panel)

Drive Trays

2 48 (24 drive trays)

RJ-45 Ethernet Connector

2 2 (1 connector)

BBU Module (optional)

1 1 (1 per module)

Table 3-1: LED Distribution

3-2

Status-indicating LEDs