Chapter 3: Troubleshooting
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
NVMe8
NVMe11
NVMe1
NVMe4
NVMe7
NVMe10
NVMe0
NVMe3
NVMe6
NVMe9
After two M.2 devices are installed:
NVMe2
NVMe6
NVMe10
NVMe13
NVMe1
NVMe5
NVMe8
NVMe12
NVMe0
NVMe3
NVMe7
NVMe11
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.
