Making backups over the network can be done in two ways: either save on disk and transfer or just transfer without saving. Both ways have their strong and weak points. The second way, particularly, is highly dependent on the upload speed, which would either reduce or increase the backup time. Other factors that influence it [&]

https://www.percona.com/blog/2019/11/26/comparing-s3-streaming-tools-with-percona-xtrabackup/