Chapter 5. Resolving Installation Issues - Lenovo ThinkSystem SN850 Setup Manual

Chapter 5. Resolving installation issues

Use this information to resolve issues that you might have when setting up your system.
Use the information in this section to diagnose and resolve problems that you might encounter during the
initial installation and setup of your server.
• "Single compute node does not power on" on page 85
• "The compute node immediately displays the POST Event Viewer when it is turned on" on page 85
• "Embedded hypervisor is not in the boot list" on page 86
• "Server cannot recognize a hard drive" on page 86
• "Displayed system memory less than installed physical memory" on page 87
• "A Lenovo optional device that was just installed does not work" on page 87
• "Voltage planar fault is displayed in the event log" on page 87
Single compute node does not power on
Complete the following steps until the problem is resolved:
1. If you recently installed, moved, or serviced the compute node, reseat the compute node in the bay. If
the compute node was not recently installed, moved, or serviced, perform a virtual reseat through the
CMM service command. For more information about the CMM service command, see the
Chassis Management Module: Command-Line Interface Reference Guide" at http://
flexsystem.lenovofiles.com/help/topic/com.lenovo.acc.cmm.doc/cli_command_service.html
2. Check the event log on the CMM 2 for any events that are related to the compute node and solve them.
3. Make sure that the CMM 2 can recognize the compute node. Log in to the CMM 2 user interface and
verify that the compute node appears in the chassis view. If the CMM 2 cannot recognize the compute
node, remove it, and inspect the compute node and the back of the node bay to make sure that there is
no physical damage to the connectors.
4. Make sure that the power policy that is implemented on the CMM 2 is sufficient to enable the compute
node to power on. You can view the power policy using the CMM 2 pmpolicy command or the CMM 2
web interface.
• For more information about the CMM 2 pmpolicy command, see the
Management Module: Command-Line Interface Reference Guide" at http://flexsystem.lenovofiles.com/
help/topic/com.lenovo.acc.cmm.doc/cli_command_pmpolicy.html
• From the CMM 2 web interface, select Power Modules and Management from the Chassis
Management menu. For more information, see the
User's Guide" at http://flexsystem.lenovofiles.com/help/topic/com.lenovo.acc.cmm.doc/cmm_user_
. All fields and options are described in the CMM 2 web interface online help.
guide.html
The compute node immediately displays the POST Event Viewer when it is turned on
Complete the following steps until the problem is solved.
1. Correct any errors that are indicated by the light path diagnostics LEDs.
2. Make sure that the compute node supports all the processors and that the processors match in speed
and cache size.
You can view processor details from system setup.
To determine if the processor is supported for the compute node, see
serverproven/index.shtml
© Copyright Lenovo 2017, 2022
.
"Flex System Chassis
.
the "Flex System Chassis Management Module:
https://static.lenovo.com/us/en/
"Flex System
.
85