Dell PS4100, Hardware Maintenance Manual

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PS4100 Hardware Maintenance Guide Troubleshooting Your Array
36
Obtaining Component Diagnostics
You can collect diagnostic information for one or more members of a PS Series group through the Group
Manager GUI or the CLI. See the Group Administration guide or the CLI Reference for more information.
Troubleshooting Array Startup Failure
If your system halts during startup, check if:
• The array fault LEDs are lit. See Front-Panel Features and Indicators on page 3 .
• There is a constant scraping or grinding sound when you access the hard drive. See Obtaining Technical
Support and Customer Service on page 35 .
Troubleshooting Loss of Communication
For information about troubleshooting loss of communication, see Network Requirements and
Recommendations in the Installation Guide for your array .
Troubleshooting Array Connections
1. Verify that the control module port link status LED and the control module status LED are solid green
for each port that is connected to a cable. If the LEDs are not solid green, see Control Module Features
on page 17 .
2. Make sure that all the cables are attached correctly.
If the problem is not resolved, see Obtaining Technical Support and Customer Service on page 35 .
Troubleshooting External Connections
• Verify that the cables are connected to the correct Ethernet and, if applicable, Management ports before
troubleshooting any external devices. For the location of the back-panel connectors on your array, see
Back-Panel Features and Indicators on page 4 .
• Make sure that the power cables are securely attached to the power supply modules on your array.
Troubleshooting Power Supply and Cooling Modules
1. Locate the faulty power supply and determine the status of the LEDs.
If the AC power LED is not lit, check the power cord and power source into which the power supply is
plugged.
– Connect another device to the power source to verify if it is working.
– Connect the cable to a different power source.