Replace the NVMe Switch Card Cables (FRU)
When servicing the components in this section, unplug the AC power cords and use ESD protection.
- Prepare the server for service.
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Remove the P0 MR0/MR1 memory risers.
This gives you room to access the cables for removal. See Remove a Memory Riser Card.
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Disconnect the four NVME cables (0 through 3) from the switch card in PCIe slot 1.
If needed, first remove the NVMe Switch card from its PCIe slot to gain better access to the cable connectors.
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Disconnect the four NVMe cables (0 through 3) from the disk backplane board.
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Remove the NVMe cables from the air divider, as follows.
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Detach the NVMe, HBA, and ESM cables from the three cable clips on the memory riser side of
the air divider. Then, carefully lift the cables up and out of the cable slot [B] in the air divider
that provides access to the disk backplane area.
There are three clips, NVMe cables attached to each.
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Once the NVMe cables are clear of the air divider clips, gently pry the air divider cable
shield [A in the figure above] away from the power supply just enough to allow you to slide out the
NVMe cables.
The NVMe cables need to be completely free of the air divider.
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Detach the NVMe, HBA, and ESM cables from the three cable clips on the memory riser side of
the air divider. Then, carefully lift the cables up and out of the cable slot [B] in the air divider
that provides access to the disk backplane area.
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Carefully thread the ends of NVMe cables you detached from the NVMe Switch card through the
narrow space between the P0 heat sink and the power supply cage and up and out of the system.
The space between the P0 heat sink and the power supply cage is narrow, the NVMe cable connectors will only fit through one way.
Caution - Hardware damage. Try not to allow the SAS and NVMe (if installed) cables to rub against the CPU0 heatsink radiator fins. They are sharp and can damage the cable insulation.
- To install the replacement cables, carefully thread the NVMe Switch card end of the cables through the narrow space between the P0 heat sink and the power supply cage.
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Reconnect the NVMe cables to the NVMe Switch card.
If needed, reinstall the NVMe Switch card in PCIe slot 1 if you removed it earlier.
Note - The NVMe Switch card only works in PCIe slot 1.
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Reroute the NVMe cables through the air divider to the disk backplane area.
Refer to the figure in step 5 for cable routing.
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Reconnect the NVMe cables to their connectors on the disk backplane.
Refer to the figure in step 4 to determine proper connections.
Note - Any excess cable length should be in the PCIe card area to allow better air flow through the disk backplane area. - Reinstall the P0 MR0/MR1 memory risers you removed earlier.
- Prepare the server for operation.