General problem determination procedures

Use the information in this section to resolve problems if the event log does not contain specific errors or the compute node is inoperative.

If you are not sure about the cause of a problem and the power supplies are working correctly, complete the following steps to attempt to resolve the problem:
  1. Power off the compute node.

  2. Make sure that the compute node is cabled correctly.

  3. Remove or disconnect the following devices, one at a time, until you find the failure. Power on and configure the compute node each time you remove or disconnect a device.
    • Any external devices,

    • Surge-suppressor device (on the compute node).

    • Printer, mouse, and non-Lenovo devices,

    • Each adapter.

    • Hard disk drives.

    • Memory modules until you reach the minimum configuration that is supported for the compute node.

    Note: See Specifications to determine the minimum configuration for your server.
  4. Power on the compute node.

If the problem is solved when you remove an adapter from the compute node, but the problem recurs when you install the same adapter again, suspect the adapter. If the problem recurs when you replace the adapter with a different one, try a different PCIe slot.

If the problem appears to be a networking problem and the compute node passes all system tests, suspect a network cabling problem that is external to the compute node.