Solution when the power alarm indicator is steady on

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Solution when the power alarm indicator is steady on:
1. Locating procedure:
The power alarm indicator is controlled by the PSU hardware, but not the software. If the power alarm indicator is steady on, causes may be as follows:
a. The power supply is normal but the switch on the power plane is turned off.
b. The PSU hardware is faulty.
2. Solution:
a. The switch on the power plane is turned off.
Log in to the storage's OSM management page and check whether related alarms are reported. If no related alarms (PSU or fan) are reported and you can query information about fans and two PSUs on the OSM page, check whether switches on power planes are switched off (you can check whether switches on power planes of controller A and B are the same). If switches on power planes are switched off, turn them on.
b. PSUs are faulty.
If switches on power planes are switched on, internal hardware of PSUs is faulty. In this case, you need to change PSUs.

Other related questions:
Problem and solution when a BBU fault alarm is reported and the alarm indicator is red
You can perform the following operations when a BBU fault alarm is reported and the alarm indicator is red: Check the SES log and search keyword invalid OnlineTest (the online BBU test fails). If the keyword exists, verify the BBU type in the SES log. If the product name of BBU is HSCB1-62, the BBUs are BYD BBUs which may cause the problem. Replace BYD BBUs with SCUD BBUs (pay attention to the change during replacement).

Problem and solution when the controller enclosure alarm indicator is on but no alarm is reported on the storage system
You can perform the following operations when the controller enclosure alarm indicator is on but no alarm is reported on the storage system: 1. Fault location and rectification a. Log in to the storage system and check whether alarm information is reported. b. Query the SES log and confirm the cause and last time when the alarm indicator is on. c. Check the SES and message log to find why the indicator is on. 2. Fault Diagnosis a. Search start led(0x0) (off) and (0x1) (on) in the SES log. Verify the last time when the alarm indicator is on. b. Check in the historical alarms whether the alarm is recovered when the indicator is on. c. Analyze turn-off and turn-on records in the message logs of controllers A and B. Search keyword light. d. If the alarm is recovered and the controller does not send a turn-off command, send the command manually. 3. Solution Send the mml:dev sesstartlight 0 command to the controller whose indicator is turned on and then not off. Note: The controller enclosure alarm indicator follows the same rule as the disk indicator does that the same indicator is turned on and then off. The above method is only applicable to the situation where the controller enclosure alarm indicator is on.

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