Solaris 2+ supports filesystem sizes up to 16TB. Will this

give interoperability problems with NFS?

No, you can share those filesystems with SunOS 4.x and other machines
just fine. The NFS protocol rarely transmits the size of the
underlying filesystems. The only programs on SunOS 4 clients that
may give trouble are du and df, but normal filesystem use is just
Suggest a Site