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DIMM installation rules

DIMMs must be installed in a specific order based on the memory configuration of the server.

The following illustration shows the location of the DIMM connectors on the system board.
Figure 1. DIMM slots
DIMM slots

This server comes with four DIMM slots with the following features:

For a list of supported DIMM options, see: Lenovo ServerProven website

Before installing a DIMM, ensure that all DIMMs to be installed must be the same type. This server supports the following types of DIMMs:
  • DDR4 UDIMM with ECC technology

Your server supports the following memory modes:
  • Independent mode

Independent mode

Independent mode provides high performance memory capability. Individual channels can run at different DIMM timings, but all channels must run at the same interface frequency.

All DIMMs installed must be the same type.

The following table shows the DIMM installation order.

Table 1. DIMM installation order
Number of DIMMsDIMM Slot Number
One DIMM  X