Dell NM176 owner manual Troubleshooting Your System

NOTICE: This troubleshooting procedure can destroy data stored on the hard drive. Before you proceed, back up all files on the hard drive.

1Run the appropriate online diagnostics test. See "Using Dell PowerEdge Diagnostics" on page 117.

Depending on the results of the diagnostics test, proceed as needed through the following steps.

2If you are experiencing problems with multiple hard drives, skip to step 5. For a problem with a single hard drive, continue to the next step.

3If your system has a SAS RAID controller, perform the following steps.

a Restart the system and press <Ctrl><R> to enter the host adapter configuration utility program.

See the documentation supplied with the host adapter for information about the configuration utility.

bEnsure that the hard drive has been configured correctly for the RAID.

cExit the configuration utility and allow the system to boot to the operating system.

4Ensure that the required device drivers for your SAS controller card or SAS RAID controller are installed and are configured correctly. See the operating system documentation for more information.

5Check the System Setup program to verify that the SAS controller is enabled and the hard drives connected to the controller are detected.

6Check the cable connections inside the system:

a Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.

b Open the system. See "Opening the System" on page 54.

c Verify that the cable connections between the hard drive(s) and the drive controller are correct, whether the connections are to the SATA connectors on the system board, a SAS expansion card, or a SAS RAID controller.

d Verify that the SAS or SATA cables are securely seated in their connectors.

e Close the system. See "Closing the System" on page 55.

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Troubleshooting Your System