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Lenovo Converged HX Series Hardware Replacement Guide
© Copyright Lenovo 2017
Replace a memory DIMM
A node might be able to self-correct for certain memory errors, however, failed memory can lead to system
degradation and should be quickly replaced. Indications of a failed DIMM are:
•
A post error on boot
•
An error in XCC
•
An error in the Prism web console
•
Not all memory is detected. For example, the appliance should have 256 GB per node and the host
only shows 240 GB.
The CRUs for 16 GB or 32 GB memory DIMMs are as follows:
Table 6. Memory DIMM options
ThinkSystem 8GB TruDDR4 2666 MHz (1Rx8 1.2V) RDIMM
ThinkSystem 16GB TruDDR4 2666 MHz (2Rx8 1.2V) RDIMM
ThinkSystem 32GB TruDDR4 2666 MHz (2Rx4 1.2V) RDIMM
ThinkSystem 64GB TruDDR4 2666 MHz (4Rx4 1.2V) LRDIMM
Replace a memory DIMM:
1.
Identify the failed DIMM by either checking the event logs in UEFI setup or use the XCC web console to
browse the post-event log. The event log contains information about the location of the DIMM fault.
2.
Shut down the node by following the hypervisor specific Node Shutdown procedure described in the
Nutanix Hardware Replacement Documentation.
3.
Power off the node and if the cable management arm is not in place, disconnect all the. Pull the node
chassis out of the rack.
4.
Remove the top cover as described in the Removing the top cover procedure in the ThinkSystem
Information Center.
5.
Remove the air baffle as described in Removing the air baffle procedure in the ThinkSystem Information
Center.
6.
Replace the memory DIMM as described in the DIMM Replacement procedure in the ThinkSystem
Information Center.
7.
Replace the air baffle as described in the Replacing the air baffle procedure in the ThinkSystem Information
Center.
8.
Replace the top cover as described in the Replacing the top cover procedure in the ThinkSystem
Information Center.
9.
Push the node chassis back into the rack and reconnect the cables as necessary. Power on the node.
10.
Start the node by following the hypervisor specific Node Start procedure described in the Nutanix Hardware
Replacement Documentation.
11.
Verify the DIMM memory failure is resolved:
•
No error in the post event log
•
No error shown in XCC
•
No error shown in Prism
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