Use powercli command Get-VMHostFirmware command.
Get-VMHost | Get-VMHostFirmware -BackupConfiguration -DestinationPath C:\backup
Referance: VMWare KB 2042141
To schdule a backups your can use windows task scheduler
vGeek: Schedule PowerShell (.PS1 file) script in Windows Task Scheduler - Part 3
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Kunal Udapi
Sr. System Architect (Virtualization, Networking And Storage)
http://vcloud-lab.com
http://kunaludapi.blogspot.com
VMWare vExpert 2014, 2015, 2016
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