There are several factors ranging to connection interface (USB 2.0, USB 3.0, Gigabit, Wireless) to physical computer specs and available resources that affect performance.
It can be yes - it also depends on quite how busy the files you are trying to backup are, as if they are in use then they may not be available for the backup. I’ve had a large (2TB or so) backup take over 24 hours, and that was to a USB3 WD Elements drive directly connected to my WD MyCloud Mirror. It’s the kind of task you set going and leave overnight, and possibly then some…
The Smartware manual is available from here - linked from the MCM download page but I think it’s generic. If you want to check something more specific the general download page is here, from there you can choose your perhaps more relevant product and confirm yourself.
I will click the Star (kudos) in appreciation however I still have a few things to ask about?
Using the Smartware Backup-Restore product I presume only changed files will be saved next time I do a back-up, rather than the entire 15 hour process again?
Is it possible to pick individual file(s) from the Backup drive and drag / copy them if required?
For more Help with SmartWare click on or activate the Help tab. At the bottom of the page you will see a link to the Online User Manuals, see image below.