Inspur NF5280M5 Operation And Maintenance Manual page 48

At this time, the first backplane needs to be connected to CPU1_NVME_HP of the
motherboard with HP_I2C line (default retimer card is inserted in PCIE1_CPU0/1)
6) When there are 6 NVME hard disks, 2 NVME hard disks are respectively inserted into
the last 2 positions of the backplane 2 and the backplane 3, and the 4 NVME are
sequentially connected to NVME0 _ CPU 1 to NVME3 _ CPU 1 of the motherboard
from left to right; The NVME hard disk of the first backplane is installed at the last 2
locations to connect the NVME0 and 1 interfaces on the Retimer card in sequence. At
this time, the first backplane needs to be connected to CPU1_NVME_HP of the
motherboard with HP_I2C line (default retimer card is inserted in pce1 _ CPU 0/1)
3.5X4 NVME Backplane (YZBB-00777.101).
The cables connecting NVME are brought out in even numbers. If an odd number of NVME
hard disks are selected, the NVME cables that are not connected to the interface of NVME hard
disks in the front still need to be connected, and the NVME E0 _ CPU 1 to NVME E3 _ CPU 1 of
the motherboard are sequentially connected.
When NVME<=4, one 777 backplane is selected, and the NVME hard disk of one 777
backplane is installed from the rear side first. the NVME hard disk is sequentially connected to
nvme0 _ cpu1 ~ nvme3 _ cpu1 of the motherboard from the front one to the back. When NVME=1
or 2, connect VPP_I2C line to CPU1_NVME_HP of motherboard
When NVME>4, 2 777 backboards need to be selected, and the following 2 777 backboards
are preferentially filled with 4 NVME hard disks, which are sequentially connected to
NVME0_CPU1~NVME3_CPU1 of the motherboard. The NVME hard disk of the upper 777
backplane is installed back first. The NVME hard disk is connected to the 0-3 interface of the
Retimer card from front to back in sequence. At this time, the upper backplane needs VPP_I2C line
to connect to CPU1_NVME_HP of the motherboard (default retimer card is inserted in PCIE1 _
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Figure 9.19
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NF5280M5
Failure Maintenance Manual
41