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17
Troubleshooting
The following sections describe problems, with possible solutions, which can occur with your
Gateway E-842R Storage Area Network.
System faults
Also see “Thermal warnings” on page 18.
Power supply faults
Thermal control
The Gateway E-842R storage enclosure uses extensive thermal monitoring and takes a number of
actions to make sure that component temperatures are kept low and that acoustic noise is
minimized. Airflow is from front to rear of the enclosure.
Symptom Cause Action
1. The CONTROLLER FAULT
LED lights orange on the
module.
2. The audible alarm sounds.
The ESI processor has
detected an internal
fault on one of the
following modules:
■
Power supply
■
Cooling
■
RAID
Replace the faulty module as appropriate.
Symptoms Causes Actions
■
Ops panel SYSTEM FAULT LED
is orange.
■
An orange LED on one or
more power supply modules.
■
Audible alarm sounding.
■
Any power fault.
■
A fan failure.
■
A thermal condition which could
cause power supply module
overheating.
■
Fault on one of the following
modules:
■
Power supply
■
Cooling
■
RAID
■
Removal of 1 power supply
module.
■
Make sure that the AC power connections to power
supply module are live.
■
Disconnect the power supply module from AC power
and remove the module from the system, then
re-install. If the problem persists, replace the power
supply module.
■
Reduce the ambient temperature.
■
Replace the faulty module, as appropriate:
■
Power supply
■
Cooling
■
RAID
Symptom Cause Action
If the ambient air is cool
(below 77°F (25°C)) and the
fans are observed to increase
in speed, some airflow
restriction may be causing
the internal temperature rise.
Note: This is not a fault
condition.
The first stage in the thermal control process
is for the fans to automatically increase in
speed when a thermal threshold is reached.
This may be caused by higher ambient
temperatures in the local environment and
may be perfectly normal.
Note: This threshold changes according to the
number of drives and power supplies
installed.
■
Check the installation for any airflow
restrictions at either the front or rear of the
enclosure. A minimum gap of 1 inch (25 mm)
at the front and 2 inches (50 mm) at the rear
is recommended.
■
Check for restrictions caused by dust build-up
and clean as appropriate.
■
Check for excessive re-circulation of heated air
from the rear to the front. Installing in a fully
enclosed rack installation is not
recommended.
■
Make sure that all blank modules are installed.
■
Reduce the ambient temperature.