Checking The Controller Enclosure Indicator Lights - Silicon Graphics TP9400 RAID Owner's Manual

3: Controller Enclosure Operation
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Checking the Controller Enclosure Indicator Lights

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Although the controller enclosure has fault indicators, these lights do not necessarily
indicate which component has failed or needs to be replaced, or which type of recovery
procedure you must perform. In some cases (such as loss of redundancy in various
controller enclosure components), the fault light does not even come on. Only the storage
management software (TPSSM7) can detect the failure.
In addition, recovering from a controller enclosure failure may require that you perform
procedures other than replacing the component. The storage management software
(TPSSM7) will explain these procedures.
Caution: Not following the software recovery procedures could lead to data loss.
Note: For more information on the storage management software (TPSSM7), see the SGI
TP9400 RAID IRIX Administration Guide (007-4306-001), the SGI TP9400 RAID Software
Concepts Guide (007-4305-001), and the SGI Storage Area Network Installation Instructions
(108-0252-003).
It is important that you check all the indicator lights on the front and rear of the controller
enclosure when you turn on the power. After you turn on the power, the indicators may
blink intermittently. Wait until the controller enclosure completes its power up before
checking for faults. Normally, it may take up to 15 minutes for the battery canister to
complete its self test and up to 6 hours to fully charge, particularly after an unexpected
power loss of more than a few minutes. While the battery is charging, both the Full
Charge-A and the Full Charge-B indicators will blink. When the battery is fully charged,
these two indicators will glow steadily (Figure 3-5).
1. To view all of the indicators, remove the front cover of the controller enclosure
(Figure 3-1 on page 29) and remove the rear access panel on the rack.
Note: The controller enclosure indicators display the status of the controller
enclosure and its components. Green indicator lights mean normal operating status;
amber indicators mean a possible failure. If you see an amber indicator, use the
storage management software (TPSSM7) to diagnose and repair the problem.
007-4304-003