How to configure multipath with iscsi on RHEL & CentOS 7

What is multipath : Device Mapper Multipathing (DM-Multipath) can be used for Improving the High Performance and for Redundancy. It allows us to configure multiple I/O paths between Servers and Storage in a single device and its mass-storage devices through the buses, controllers, switches, and bridge devices connecting them.

I have added two hard disk in iscsi.example.com server and I have already configured iscsi server from server end and if you are facing any issue to configure iscsi server so please open this link https://www.youtube.com/watch?v=5qdjdaaKJMk

if any issue feel free to comment me..

source
centos 7