The purpose of this article is to provide a step-by-step guide on how you could potentially increase the speed of your nightly cPanel backups.
If your server uses compressed backups, there are several settings within WHM > Tweak Settings > Compression that you can customize to speed up backups:
You could also adjust the I/O priority of backups via Tweak Settings in WHM. A low number for the following setting would allow backups to complete faster:
I/O priority level at which nightly backups are run (Minimum: 0; Maximum: 7) [?]