The PowerFlex SDC behavior for the length of SCSI unit product serial number value needs to be configured. The default value of this parameter is "0" (with trailing zeros) and to align with MEDITECH backup functionality (MBF) it needs to be set to "1" (no trailing zeros).
To do this, run the following command from the ESXi command line:
esxcli system module parameters set -m scini -p "blkScsiUnitSerialLenByStandard=1"