Backing up to an internal hard drive is certainly much faster than to an external USB 2.0 drive.
Backing up 10GB to my external drive takes about 20 minutes if that's any sort of guide and I use the "fast compression" setting.
OnePlus 5 review
See the work of famous artists playing with toys
iPad Pro 10.5in (2017) review
Comment faire une capture d’écran sur un Mac ?