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Memory problems

Follow this procedure to resolve issues related to memory.

Displayed system memory less than installed physical memory

Each time you install or remove a DIMM, you must disconnect the server from the power source; then, wait 10 seconds before restarting the server.

Complete the following steps until the problem is solved.

  1. Check the system event log and resolve any related problems. To view the system event log, go to Setup Utility and select Security > System Event Log > View System Event Log.

  2. Make sure that:

    • The DIMMs are supported by the server (see Lenovo ServerProven website).

    • The DIMMs are properly installed. Examine if there is any gap between the connector and the DIMM. Remove and install the DIMM if there is any.

  3. If the server comes with Lenovo XClarity Provisioning Manager, go to Diagnostics > Memory test to perform diagnostics on the DIMMs. Replace the DIMM that is displayed as faulty. Otherwise, skip to the next step.

  4. Remove the DIMMs until the system reaches minimal memory requirement; then, add one DIMM and reboot the server, and repeat the step if the problem does not recur. If the problem occurs after addition of a DIMM, replace it.