Dell PowerEdge NM176 Hardware Owner's Manual page 112

NOTICE:
drive. Before you proceed, back up all files on the hard drive.
1 Run 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.
2 If 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.
3 If your system has a SAS RAID controller, perform the following steps.
Restart the system and press <Ctrl><R> to enter the host adapter
a
configuration utility program.
See the documentation supplied with the host adapter for information
about the configuration utility.
Ensure that the hard drive has been configured correctly for the RAID.
b
Exit the configuration utility and allow the system to boot to the
c
operating system.
4 Ensure 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.
5 Check the System Setup program to verify that the SAS controller is
enabled and the hard drives connected to the controller are detected.
6 Check the cable connections inside the system:
Turn off the system, including any attached peripherals, and
a
disconnect the system from the electrical outlet.
Open the system. See "Opening the System" on page 54.
b
Verify that the cable connections between the hard drive(s) and the
c
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.
Verify that the SAS or SATA cables are securely seated in their
d
connectors.
Close the system. See "Closing the System" on page 55.
e
112
Troubleshooting Your System
This troubleshooting procedure can destroy data stored on the hard