Memory module installation rules and order
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
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.
Note
All DIMMs installed must be the same type.
The following table shows the DIMM installation order.
| Number of DIMMs | DIMM Slot Number | |||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| One DIMM | X | |||
| Two DIMMs | X | X | ||
| Three DIMMs | X | X | X | |
| Four DIMMs | X | X | X | X |
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