Lenovo 5468 Setup Manual page 80

Solution cannot recognize a hard drive
Complete the following steps until the problem is solved.
1. Verify that the drive is supported for the solution. See
of supported hard drives.
2. Make sure that the drive is seated in the drive bay properly and that there is no physical damage to the
drive connectors.
3. Run the diagnostics tests for the SAS/SATA adapter and hard disk drives. When you start a solution and
press F1, the Lenovo XClarity Provisioning Manager interface is displayed by default. You can perform
hard drive diagnostics from this interface. From the Diagnostic page, click Run Diagnostic ➙ HDD test.
Based on those tests:
• If the adapter passes the test but the drives are not recognized, replace the backplane signal cable
and run the tests again.
• Replace the backplane.
• If the adapter fails the test, disconnect the backplane signal cable from the adapter and run the tests
again.
• If the adapter fails the test, replace the adapter.
Displayed system memory less than installed physical memory
Complete the following steps until the problem is resolved:
Note: Each time you install or remove a DIMM, you must disconnect the solution from the power source;
then, wait 10 seconds before restarting the solution.
1. Make sure that:
• No error LEDs are lit on the operator information panel.
• No DIMM error LEDs are lit on the system board.
• Memory mirrored channel does not account for the discrepancy.
• The memory modules are seated correctly.
• You have installed the correct type of memory.
• If you changed the memory, you updated the memory configuration in the Setup utility.
• All banks of memory are enabled. The solution might have automatically disabled a memory bank
when it detected a problem, or a memory bank might have been manually disabled.
• There is no memory mismatch when the solution is at the minimum memory configuration.
2. Reseat the DIMMs, and then restart the solution.
3. Check the POST error log:
• If a DIMM was disabled by a systems-management interrupt (SMI), replace the DIMM.
• If a DIMM was disabled by the user or by POST, reseat the DIMM; then, run the Setup utility and
enable the DIMM.
4. Run memory diagnostics. When you start a solution and press F1, the Lenovo XClarity Provisioning
Manager interface is displayed by default. You can perform memory diagnostics from this interface.
From the Diagnostic page, click Run Diagnostic ➙ Memory test.
5. Reverse the DIMMs between the channels (of the same processor), and then restart the solution. If the
problem is related to a DIMM, replace the failing DIMM.
6. Re-enable all DIMMs using the Setup utility, and then restart the solution.
7. (Trained technician only) Install the failing DIMM into a DIMM connector for processor 2 (if installed) to
verify that the problem is not the processor or the DIMM connector.
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