Supermicro H13DSH User Manual page 45

Question: Why are the numbering of NVMe storage devices not shown as sequential
in the operating system?
Answer:
This only happens after an M.2 NVMe device is installed. In the example of a twelve-bay
system, NVMe4 (from CPU1) is occupied and NVMe9 (from CPU2) is occupied, causing the
numbering of the NVMe storage devices in the operating system to be different from that of
the physical presence of drives.
Before two M.2 device two installed:
NVMe2 NVMe5
NVMe1 NVMe4
NVMe0 NVMe3
After two M.2 devices are installed:
NVMe2 NVMe6
NVMe1 NVMe5
NVMe0 NVMe3
Note that NVMe4 and NVMe9 are gone. Once an M.2 NVMe device is installed, the operation
system recognizes the storage devices based on the PCIe training sequences. (The numbering
sequence begins with CPU1-connected devices and then CPU2-connected devices.)
Question: I ejected an NVMe drive via the BMC Web GUI. It displayed "Exception" in
the log, but the drive was actually ejected.
Answer:
This is perfectly fine at this stage and will not affect your normal use of the drives and the
BMC Web GUI.
NVMe8 NVMe11
NVMe7 NVMe10
NVMe6 NVMe9
NVMe10 NVMe13
NVMe8 NVMe12
NVMe7 NVMe11
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Chapter 3: Troubleshooting