I heard that
rsync isn't the best one when creating the first backup in terms of performance. Instead it is the best for the later backups. So I wonder what are some better commands for creating the first backup, and what your usages for them are? Thanks!
rsync isn't a good option for copying files to an empty destination. If you're migrating data to an empty destination, you already know all files need to be copied so the checking rsync does is counterproductive and actually increases the time the transfer takes. This is mentioned somewhere in the rsync man page or FAQ or something, I think.