Wherever the memory "resides" it is co-resident with the structure of the brain, and all its unique interconnections. The most common speculation would say there is no separation of software and hareware.
That is one of the models. There are others. At the moment there are problems with all the models except the 5-dimensional Akashic model. We don't have a well-developed 5-dimensional technology and so can't do anything with it, which may or may not be a problem depending on your politics.