Mind uploading is said to be a process of scanning a physical structure of the brain accurately enough to create an emulation of the mental state . In that sense, it is like what we already have with virtual machines, that can be suspended and restored to an exact state on another computer or network or virtual machine.
Identity preservation, however, is as important in many cases, because a mind copied, even if exactly the same, cannot occupy the same role in the world to follow through the same future state space. It is similar to how a copy of a virtual machine cannot be instantiated twice on the same memory addresses.
I'd like to reserve this question for searching of practical ideas of performing mind upload -- both identity-preserving and non-preserving kinds, with different applications for various intents and purposes, and not limiting the idea to just humans, but including "mind-uploading" of machine intelligences as well.