http://www.virten.net/2016/04/backup-solutions-for-free-esxi/
https://www.vladan.fr/tag/free-tool-from-extrasphere-free-vmotion-for-free-esxi-hosts/
Backup Solutions for Free ESXi
it's notes
“Tell me and I forget, teach me and I may remember, involve me and I learn.” ― Benjamin Franklin.