How to Backup Your Data To backup your data/files from your server, you will need your encryption key file and password. Your repository will be:  Account_Name@pbs@hostname/IP:Account_Name Example command for backing up a folder or file proxmox-backup-client backup [linux_user].pxar:[folder/file path] --repository [your repository link]  --keyfile /path/to/encryption/file.key For more in depth or complex backup commands, please refer to Proxmox's Backup Usage Manual .