Dell PowerEdge 6850 - Manual (Page 24)

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SAS Information Update
4 Turn off your system, reseat the hard drive, and restart the system.
If the problem is not resolved, continue to the next step.
5 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.
6 Ensure that the hard drive has been configured correctly for the RAID.
7 Exit the configuration utility and allow the system to boot to the operating system.
8 Ensure that the required device drivers for your controller card are installed and are configured
correctly. See the operating system documentation for more information.
9 Check 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" in the Installation and Troubleshooting Guide.
c Verify that the cable connections between the SAS backplane(s) and the SAS controller card are
correct. See Figure 1-5.
d Verify that the SAS cables are securely seated in their connectors.
e Verify that the power connectors on the SAS backplane(s) are securely seated in their connectors.
f Close the system. See "Closing the System" in the Installation and Troubleshooting Guide.
g Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
If the problem persists, see "Getting Help" in the Installation and Troubleshooting Guide.