Troubleshooting Sun StorEdge[TM] T3, T3+ and 6120 Power Cooling Unit Failures

Asset ID:	1-75-1131522.1
Update Date:	2010-07-19
Keywords:

Solution Type Troubleshooting Sure

Solution 1131522.1 : Troubleshooting Sun StorEdge[TM] T3, T3+ and 6120 Power Cooling Unit Failures

Applies to:

Sun Storage T3+ Array - Version: Not Applicable and later   [Release: NA and later ]
Sun Storage T3 Array - Version: Not Applicable and later    [Release: NA and later]
Sun Storage 6120 Array - Version: Not Applicable and later    [Release: NA and later]
Information in this document applies to any platform.

Purpose

This document addresses the identification of failed power supply in T3,T3+ and 6120 storage arrays, via the symptoms provided.

Symptoms:

Storade reports an alarm in Browser or email.
Performance degraded.
Power Cooling Unit (PCU) fault LED lit.
Global fault LED lit.
Messages in logs indicating PCU failure.

Last Review Date

June 22, 2010

Instructions for the Reader

A Troubleshooting Guide is provided to assist in debugging a specific issue. When possible, diagnostic tools are included in the document to assist in troubleshooting.

Troubleshooting Details

Please validate that each troubleshooting step below is true for your environment. Each step will provide instructions via a link to a document, for validating the step and taking corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. Please do not skip a step.

1. Inspect the array PCU LEDs visually to see if any fault exists.

If the array is remote or you still feel there is a problem with the PCU, then proceed to Step 2.
Otherwise, the following table explains the LED status and corrective actions (indicated by *) for fault conditions:

AC LED	PS LED	Description
Off	Off	• Power is off • No AC Input * Action: Check the power source
Amber	Off	• Power is off • Power switch turned off • AC power is available * Action: Check if the PCU switch set to ON position.
Green	Off	Array is shutdown: • PCU disabled • AC power is available * Action: Go to Step 2.
Green	Green	Normal operating state: • PCU receiving AC power • Power switch is turned on • AC power is available * Action: No Action required. If you would like to investigate further, go to Step 2.
Amber	Amber	• Power switch is turned off • Array will power down after PCU is disabled * Action: Check power source and power switch position
Green	Amber	Indicates one or more of the following: • Over temperature condition; PCU is disabled • DC power not available; PCU disabled • Both fans have faults; PCU disabled • Battery is being tested * Action: Proceed to step 2
Green	Blinking Green	• Battery is charging * Action: Refer <Document: 1002468.1> Verify Battery, for battery diagnostics****
Green	Blinking Amber	Indicates one or more of the following: • PCU is disabled • single fan fault • Battery low; PCU remains enabled • Battery failure; PCU enabled * Action: Proceed to step 2

2. Validate that you can telnet and log into your array.

If you have problems to log into the array, please reference <Document: 1131324.1> Troubleshooting Sun StorEdge[TM] T3, T3+ and 6120 Access Problems.
If you log into the array successfully, go to Step 3.

3. Check the status of the PCU.

t3:/:<7> fru stat pcu

Example:

      t3:/:<7>fru stat pcu
POWER   STATUS   STATE       SOURCE  OUTPUT  BATTERY  TEMP    FAN1    FAN2
------  -------  ---------   ------  ------  -------  ------  ------  ------
u1pcu1  ready    enabled     line    normal  normal   normal  normal  normal
u1pcu2  ready    enabled     line    normal  normal   normal  normal  normal
u2pcu1  ready    enabled     line    normal  normal   normal  normal  normal
u2pcu2  ready    enabled     line    normal  failed   normal  normal  normal

If the status/state is ready-enabled and battery status is normal PCU is optimal. No further action is required.
If status/state is ready-disabled, check power cables, switch and AC output.
If status is ready-enabled and the battery is failed, then there may be a problem with the battery. Reference <Document: 1147963.1> Troubleshooting Sun StorEdge[TM] T3, T3+ and 6120 Battery Failures.
If status is fault-enabled, output=fault, go to Step 4.

4. Contact Oracle for support.

Please collect the array data from a Solaris host:

# /opt/SUNWexplo/explorer -w !default,t3extended

and open a service call with Oracle support.

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