OSI/MHS Orientation Guide

OSI/MHS Orientation Guide—424829-001
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X.400 Support on Compaq Integrity
Systems
Many organizations have a strategic commitment to open systems: that is, to systems
based as much as possible on standard technologies. Indeed, the OSI Reference Model
addresses precisely this interest, providing a means for systems of widely varying design
to work together.
In some organizations or for certain types of applications, the commitment to open
systems goes beyond communications and implies the requirement for an open,
standards-based operating system platform. In that arena, the UNIX operating system is
the preeminent choice, partly because so many computing professionals are experienced
with it, and partly because of the widespread availability of compatible products to suit a
range of budgets and application needs.
To satisfy the requirements of UNIX customers, Compaq offers a family of RISC-based
systems called the Integrity Series, which uses a fault-tolerant UNIX implementation
called NonStop-UX. This section describes the X.400 products Compaq provides for
that platform. It also mentions some considerations for integrating NonStop and
Integrity Series systems in the same X.400 network.
X.400 Products for Integrity Series Systems
Several X.400 implementations and EDI solutions are available for Integrity Series
systems. For the implementations and solutions appropriate to your system, contact
your Compaq field representative.)
Integrating X.400 on NonStop and Integrity Series
Systems
You can easily integrate OSI/MHS with Integrity Series X.400 solutions. In fact, the
combination of the two can satisfy an impressive list of network requirements. For
instance, you might use OSI/MHS as your backbone messaging network to give users
the full benefits of 1988 X.400—including a message store and P7 interface, and a
message-relay service that accommodates both 1984 and 1988 clients—and the unique
advantages of NonStop systems for scalability and availability. At the same time, you
could use Integrity Series systems to provide X.400 connectivity in a UNIX
environment, a link to systems running SMTP, and distributed user agents.
Note. In this manual, the term “NonStop system” refers to a computer running the Compaq
NonStop Kernel. The term “Integrity Series system” refers to a computer running the NonStop-
UX operating system.