Im going to say that doesnt exist and restoring from it would be a nightmare. You could cobble together a shell or python script that does that though.
You’re better off just getting a drive bay and plugging all the drives in at once as an LVM.
You could also do the opposite, which is split the 4TB into the different logical volumes. Each the same size as a drive.
Do you understand that the primary barriers being referred to here are intellectual property? I suspect you aren’t in favor of propritarian intellectualism. What do you think those racist academies opinions on intellectual property has been?