Between a search engine and a friend, the search for PC-NFS 3.0 yielded a set of seven 360K floppy images of Sun PC-NFS 3.0.1. Hooray for the Internet, and thank you!
Judging by the timestamps, PC-NFS 3.0.1 was finalized in May 1989 but this particular disk set was sold in January 1991 or later. How can we tell? The files have timestamps of 05/18/1989, except for PCNFS.SYS, which is dated 01/30/1991. PCNFS.SYS is marked with a serial number. Without knowing exactly how Sun did it, it appears likely that the floppy sets were mass duplicated and then PCNFS.SYS individually serialized on demand. And it even works!
Being on the older side, PC-NFS 3.0 does not support any new-fangled inventions like NDIS or ODI drivers, but does appear to support 3Com’s EtherSeries networking stack. It also comes with a set of its own drivers, supporting 3Com 3C501 (EtherLink), 3C503 (EtherLink II), 3C505 (EtherLink Plus), 3C523 (EtherLink/MC), Micom-Interlan NI5010, Ungermann-Bass NIC, and Western Digital WD8003. There was also a SLIP option using serial ports.
There’s a full-screen menu-driven installation and configuration interface which makes PC-NFS reasonably easy to set up…
…at least for people who have some idea how to correctly fill in this sort of information:
There is a command-line interface built around a NET command; it strongly resembles Microsoft’s MS-NET and LAN Manager, but at the same time it’s quite different:
Sun likely licensed the DOS redirector from Microsoft, and used that to present NFS mounts as DOS drive letters.
Unsurprisingly, PC-NFS was a mixture of DOS and UNIX. The classic
ls command was provided, and unlike DIR, it could show long file names:
PC-NFS 3.0 was more than just NFS though. There was also telnet, ftp, rcp, and rsh. Thus PC-NFS provided a good UNIX connectivity package for PC users.
30 years later, the 1989 PC-NFS 3.0.1 package has no trouble connecting to a Synology NAS, accessing NFS exports from DOS 3.x and 4.x. Bridging three decades in the world of computing is really not bad. Now the search is on for PC-NFS 2.0 or older.