proxmox host backup

Hi, I currently have 15 PVE Hosts divides in 3 Clusters.. 1 x Main PBS with s Replication Offsite. My question is somewhat related to PBS but not directly. Currently all my VMs are Backed-up no problem bit the Hosts configurations /OS are not. Is there a way to back-them up using the tools...

I worked with computers for more than 30 years and with Linux since the first Covid wave in 2019. Since my first Proxmox installation (v.6.1) I've solved the backup issue turning off the server monthly, booting from an USB pendrive with Acronis True Image 2020 and cloning the main SSD on another...