Dell PowerEdge 850 - Manual (Page 38)

For information about testing the controller, see the controller's documentation.
If the tests fail, continue to the next step.
3. If the SCSI hard drives are configured in a RAID array, restart the system and enter the RAID configuration utility.
4. Ensure that the primary SCSI channel is enabled, and restart the system.
5. Verify that the device drivers are installed and configured correctly. See the operating system documentation.
6. Remove the bezel. See " Removing the Bezel ."
7. Remove the hard drive:
¡ If your hard drive is not configured in a RAID array, shut down the system, remove the hard drive and install it in another drive bay. See " Front-
Access SCSI Hard Drives (Non-Hot-Plug) " in "Installing Drives."
¡ If your hard drive is configured in a RAID array with four hard drives, install a new hard drive. See " Hot-Plug SCSI Hard Drives " in "Installing Drives."
¡ If your hard drive is configured in a RAID array with up to three hard drives, remove the hard drive and install the drive in an empty drive bay. See
" Hot-Plug SCSI Hard Drives " in "Installing Drives."
8. Install the bezel. See " Installing the Bezel ."
9. If the system recognizes the hard drive, reinstall the hard drive in the original bay. See " Hot- Plug SCSI Hard Drives " or " Front-Access SCSI Hard Drives
(Non-Hot-Plug) " in "Installing Drives."
If the hard drive functions properly in the original bay, the drive carrier could have intermittent problems. Replace the drive carrier. See " Hot-Plug SCSI
Hard Drives " or " Front-Access SCSI Hard Drives (Non-Hot-Plug) " in "Installing Drives."
If the problem persists, the SCSI backplane board has a defective connector. See " Getting Help ."
10. Check the SCSI 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 ."
c. Lay the system on its right side.
d. Remove the cover. See " Removing the Cover ."
e. Verify that the SCSI cable is securely connected to the controller card and the SCSI backplane.
f. Replace the cover. See " Replacing the Cover ."
g. Stand the system upright.
h. Install the bezel. See " Installing the Bezel ."
11. Format and partition the hard drive. See the operating system documentation.
12. If possible, restore the files to the drive.
If the problem persists, see " Getting Help ."
Troubleshooting a Cabled SCSI Hard Drive
Problem
l Device driver error.
l Hard drive not recognized by the system.
NOTE: To enter the utility, press <Ctrl><h>, <Ctrl><a>, or <Ctrl><m>, depending on the utility. See the documentation supplied with the
controller for information about the configuration utility.
NOTICE: Do not swap the hard drives in a four hard-drive RAID configuration. Doing so may corrupt the data on both hard drives.
CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.