I'm planning to back up multiple websites to Glacier at midnight each day.
My current system is to create a tar.gz of the whole of /var/www (i.e. all the sites), and to copy that to a different server.
I'm assuming I would use these backups if the whole server failed, though perhaps I'd occasionally want to retrieve individual files.
Should I continue in the same way (tar.gz of all per day in one Vault), or have different tar.gz per site in the same vault, or different tar.gz per site each in a vault per site?