Add a new HDD without rebooting Linux guest OS on VMware Workstation/vSphere

-Add a HDD in VM Setting.

-Check scsi_host value:
# ls /sys/class/scsi_host

-Rescan the scsi bus:
echo "- - -" > /sys/class/scsi_host/host#/scan
fdisk -l
tail -f /var/log/message