H3C SecCenter CSAP-SA, Installation Manual, Page: 30 / 71

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9. Connect the power cord. For more information, see " Connecting the power cord ."
10. Power on the server. For more information, see " Powering on the server ."
Verifying the installation
Log in to HDM to verify that the PCIe network adapter is operating correctly.
Installing DIMMs
About DIMMs
The server supports DDR4 DIMMs, which include LRDIMM and RDIMM.
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RDIMMs can perform parity check on addresses.
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Compared with RDIMMs, LRDIMMs provide larger capacity and higher bandwidth.
Guidelines
WARNING!
The DIMMs are not hot swappable.
You can install a maximum of 12 DIMMs for each processor, three DIMMs per DIMM channel. For
more information, see DIMM slots in "Appendix A Server specifications."
When you install DIMMs, follow these restrictions and guidelines:
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Make sure the corresponding processor is present before powering on the server.
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Make sure all DIMMs installed on the server have the same specifications.
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Populate the white slots, then the black slots, and finally the blue slots. For example, for
processor 1, populate DIMM slots A1 through A4 prior to DIMM slots A5 through A8, and
populate DIMM slots A5 through A8 prior to DIMM slots A9 through A12.
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Populate DIMM channels in sequence. If only one processor is installed, start with the lowest
numbered channel, for example, A1, A2, A3, and so on. If two processors are installed, start
with the lowest numbered DIMM channels on the two memory controllers in alphabetic order,
for example, A1, B1, A2, B2, A3, B3, and so on.
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For the memory mode setting to take effect, make sure the following DIMM installation
requirements are met when you install DIMMs for a processor:
Memory mode DIMM requirements
Mirror
Lockstep
Populate channel 1 and channel 2 in the same way, and populate channel
3 and channel 4 in the same way (same DIMM quantity, same slots, and
same DIMM model).
Memory Rank Sparing A minimum of 2 ranks per channel.
NOTE:
If the DIMM configuration does not meet the requirements for the configured memory mode, the
system uses the default memory mode (Independent mode). For more information about
configuring the memory mode, see "Appendix C Common software operations."
Procedure
1. Power off the server. For more information, see " Powering off the server ."
2. Remove the server from the rack. For more information, see " Removing the server from a rack ."