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From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  Stretching a Domain file system
Message-ID: <9102151426.AA22291@richter.mit.edu>
Date: 15 Feb 91 14:26:37 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 21

Apollo nodes that are on differnet physical network *may* share the same
Domain file system *IF* the network gateway is an Apollo workstation with
"rtsvc" enabled to perform routing *OR* if the network gateway is a machine
which accepts the Apollo DDS network protocal (I thinkt the Cisco routers
do this?). The Apollo file system does *not* use TCP/IP network protocals
(they are too slow) and can not span an internet in which one  or more or
(of) the routers is a TCP/IP-only router. Apollo workstation can run NFS
in addition to the Apollo file system, and two or more Apollo workstations
*can* share files across an internet via NFS, although NFS has certain
limitations (ie. Apollo file-types are not visible across NFS links).
I believe that Apollo had a product which would connect two remote Apollo
sites via a T1 link which allowed the full Apollo DDS networking protocals
to be used, but a leased T1 line is kind of expensive for a single node.


 -- David Krowitz

krowitz@richter.mit.edu   (18.83.0.109)
krowitz%richter.mit.edu@eddie.mit.edu
krowitz%richter.mit.edu@mitvma.bitnet
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