Backup ESXi

ESX Command Line

Backup

vim-cmd hostsvc/firmware/sync_config

vim-cmd hostsvc/firmware/backup_config

You get a link to download the config bundle.

vim-cmd hostsvc/maintenance_mode_enter

vim-cmd hostsvc/firmware/restore_config /tmp/<name of the bundle>.tgz

Sources and useful links

How to back up and restore the ESXi host configuration