Ten thousand full R520 G6 server, after the motherboard is replaced, the host is powered on, the machine works normally

Description of the problem
Ten thousand full R520 G6 server, the host is turned on after the motherboard is replaced, the machine works normally.

Analysis
into the eye through the Standard Edition view, everything is normal.
By flashing the BIOS, but after the BIOS is finished, the fault still exists.
Finally, through the BIOS setup command: MULTICIG X, to change which version number to the previous one.
So before replacing the motherboard, you should first remember the BIOS version number of the original motherboard or check the actual configuration of the machine, so after replacement, it will be easier to find out the problem.

Note:
Lenovo WQ R520 G6 BIOS V1.4E (onboard SAS /Onboard SAS RAID /SAS ZCR configuration)
Lenovo WQ R520 G6 BIOS V1.4G (Onboard SATA/SCSI/SCSI RAID/extra SAS RAID configuration)
Lenovo WQ R520 G6 BIOS V1.4I (onboard SATA RAID configuration)
Lenovo WQ R510 G6 BIOS V1.4A (onboard SAS/board SAS) RAID/SAS ZCR configuration)
Lenovo WQ R510 G6 BIOS V1.4C (onboard SATA/SCSI/SCSI RAID/extra SAS RAID configuration)
Lenovo WQ R510 G6 BIOS V1.4D (onboard SATA RAID configuration) )