User guide

Galaxy 55 User Guide
44
4.5.6 Power Supply/Cooling Module Detection
4.6 FC-AL Drive Carrier Module Faults
Disk drive status is monitored by a Green LED and an Amber LED mounted on the front of each Drive Carrier
Module, providing the following indications:
* SES controlled function.
4.6.1 Front Dummy Fascias
Front dummy fascias must be fitted to all unused drive bays to maintain a balanced air flow.
4.6.2 Auto Start Failure
Unless otherwise selected at installation time, all drives in the enclosure should automatically start their motors after
power is applied. If this has not occurred one of the following conditions may exist/
• The disk drive start switch has been set on the ESI/Ops Panel module during installation, thus disabling the
drive auto start function.
• There is a power problem (An alarm and power fault indication would normally be active).
• Only 1 Power Supply/Cooling module is fitted in an enclosure with:
– drive Type 3 selected
– eight or more drives installed.
A full complement of two Power Supply/Cooling modules are required to auto start.
Note: The SYSTEM LED will flash Green/Amber.
Symptom Cause Action
1 Flashing System LED
2 PSU LED is constant
3 Audible alarm sounding
The system has been configured to
expect redundant Power Supply/
Cooling modules. Insufficient
modules have been detected.
1 Check the number of PSUs present and
operational.
2 Check for an amber LED on one or
more Power Supply/Cooling
modules,.or a PSU has been removed
and not replaced.
Table 4–2 LED Functions
State Green Amber
No drive fitted Off Off
Enclosure Thermal overrun N/A ON (forced condition)
Drive Power on On Off
Drive Activity Blink off Off
Drive Fault On On*
Drive Spin-up or Formatting Flashing Off