Dell PowerEdge R905 Hardware Owner's Manual (PDF) - Page 161
Troubleshooting a SAS Controller or SAS RAID Controller
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If the hard drive functioned properly in another bay but does not function in the original bay, the SAS backplane has a defective connector. See "Getting Help" on page 179. 8 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 and Closing the System" on page 65. c Verify that the cable connections between the SAS backplane and the controller card are correct. See "Installing a SAS Controller Card" on page 112. d Verify that the data cables are securely seated in their connectors. e Verify that the power connector on the SAS backplane is securely seated in its connector. f Close the system. See "Opening and Closing the System" on page 65. g Reconnect the system to the electrical outlet, and turn on the system and attached peripherals. If the problem persists, see "Getting Help" on page 179. Troubleshooting a SAS Controller or SAS RAID Controller NOTE: When troubleshooting a SAS or SAS RAID controller, also see the documentation for your operating system and the controller. Problem • Error message indicates a problem with the SAS or SAS RAID controller. • SAS or SAS RAID controller performs incorrectly or not at all. Troubleshooting Your System 161