Support

Hello,

I'm sorry, but can you please explain better?

You have two websites, Site A and Site B. In which one is installed Akeeba Backup? Which one you want to backup? From which site?

You can't.

I mean, technically we could implement that and we did try that but our experiment did not yield a practical result.

Backing up requires accessing all files and database content of your server.

Accessing files over SFTP or FTP/FTPS is slow. In a local gigabit network it was two to three orders of magnitude slower than direct access. There were also other caveats such as hidden files not being shown in directory listings, or some servers (especially Windows hosts) producing a directory listing in a non-standard format which could not be parsed correctly.

Even if we accepted a dead slow backup, the next problem was the database backup. We'd essentially need you to open a direct database connection over the Internet which is supremely insecure. Even like that, the database backup was one to two orders of magnitude slower than direct access on the same server even when using our local gigabit network.

In the end of the day, what was a 20 seconds local backup turned into an hour-long backup — and that's a nearly empty site! For a site of any substantial site (let's say around 2GiB backed up) it would take well over a day. This made this feature impractical, even if we were willing to overlook the complicated configuration and problems you'd run into.

The best way is to install Solo on each of your site. You can trigger the backups remotely using for example Akeeba Remote CLI. This is much faster as the backup runs on the server of the site being backed up, not trying to retrieve its data over the web.