set up NFS two way syncronization

I have two servers that I want to "share" the home folder of, such that when I make changes on Server A they appear on Server B and when I make changes on Server B they appear on Server A. Right now I have NFS set up such that when I make changes on Server A (NFS server) they appear on Server B (NFS client), but not visa versa. Is there something I can do within the NFS config to so that changes B show up on A? My question is, is there a way to get NFS to do what I want without doing something convoluted, or should I be using another tool to acheive this? Thanks in advance!