HDD Sleep - NFS

Hi

I am investigating why my HDD are not spinning down - And I’ve managed to track it down to NFS - I’ve used fatrace and got this line over and over again

nfsd(1880): W /

I’ve also found that stopping nfs-kernel-server allows the drives to sleep…Is this expected behavior of NFS? Is there a way I can learn more as to why that would be the case