Why can't I add a new hard disk to scan?How to solve?

1.//First find your host bus number

# grep mpt /sys/class/scsi_host/host?/proc_name

2. Check the host bus number
# ls /sys/class/scsi_host/

3. Rescan the SCSI bus to add devices

4. Check it with fdisk -l, and it will be successful

Note: If there are several buses, just scan a few.