I have an archive disk/directory that holds all the 'write once, keep forever' stuff like photos, music, ebooks, etc. That can be rsync'd periodically and that won't take much time because the archive grows fairly slowly over time, and rsync will only need to transfer those relatively few additions.
I'm also somebody who prefers the feel of my old Lenovo ThinkPad T410 from back in 2010 to my much later P53. Perhaps I should resurrect it with the upgrading of its 2TB hard drive to a 2 or 4 TB SSD. I must look into that.