How to efficiently configure server backups (ISPmanager Lite 5.221.2)?

Question

Backup

Good afternoon, tell me, there is a large grid of sites - a full backup takes 250 gb. I tied up Google Drive, but judging by the execution time (about 90 hours) - I have serious concerns about this. + It is very difficult to quickly get something from such an archive. Suddenly something is broken .... in general, this is a whole hemorrhoid. It is possible that the server also works worse because of this ... Ideally, of course, I like how it works on virtual machines, where over the past two weeks you can pull out any file from the backup in 1 second. How to achieve this on a dedicated server? Any ideas, literature, manuals, or maybe paid services? I still do not understand where to dig, TP refuses to help. Those. I don’t even know where to look to make it convenient and reliable and not cost millions)

Answer 1

If you have a dedicated server, put a virtualization platform on it (ProxMox as an option) and make backups of the entire virtual machine.
Or
https://habr.com/ru/post/86526/