Best way to backup a large site?

I have an account on a Cpanel server that's using close to 5 gigs of space. WHM always timesout and won't backup the site to the second hard drive during the weekly backups that I have WHM set to do. I've tried using the built in backup to backup to an external location via FTP, same result.

Even manually tar'ing up the site I run into problems due to file size.

What would be the best thing to do here for scheduled backups of this one account?

 

 

 

 

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