Suggest some backup methods for the website
First of all, it depends on what you are trying to achieve, the type of backups you need, the type of access, and if there is any control panel on the server.
- If the server is under some control panel(like Plesk, cPanel) you can simply configure backups to do automatically. Upon finishing simply push all backups on some FTP or download manually. Such type of backups allows to quickly restore necessary files or databases. As well this can be done on the server-wide side and do backups of all hosted accounts.
- if you need a full backup of the server and be able to perform "bare metal restore", then such software as r1soft can suit your needs. In such a case, you can restore the entire server with all configuration, etc
- If you are running some cloud-based server, this can be done by various backup utilities(like Veeam, etc).
So as mentioned, it all depends on the server type you are running and what exactly you want to achieve.