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1993-06-21
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HP DCE/9000
Technical Data
HP 9000 Series 800 Business Servers
HP 9000 Series 700 Workstations
Designed for the HP 9000 family of HP-UX systems, HP's Distributed
Computing Environment (DCE) products provide a high-quality,
comprehensive, standards-based framework to develop, administer,
and use distributed applications. HP DCE/9000 provides a fully-
functional, robust implementation of the Open Software Foundation
(OSF) DCE services, with additional tools to facilitate the
development, debugging, and management of DCE-based applications.
[Illus. caption] Figure 1. DCE: An Intelligent Foundation for
Open Distributed Computing
The Distributed Computing Environment
As information systems change from applications running on just
one machine towards client/server applications running across
several machines, businesses need a standards-based foundation for
multivendor operation.
DCE is designed to provide a comprehensive framework for data and
applications to be distributed transparently across networks,
machines, and people. Virtually every computer vendor (from PCs to
mainframes) has endorsed DCE, making DCE a true open foundation
for heterogeneous distributed computing.
The DCE framework offers several advantages for distributed
computing.
Transparent Communication
Client/server applications no longer require server locations
written into the application. DCE directory services provide
dynamic server identification and location within the network.
Global Operation
DCE was designed with WAN operation in mind, providing reliable
communication across the entire enterprise. Capabilities include
a global and consistent directory and name service, and the
automatic routing of client requests to specialized servers in
remote locations.
Inherent Security
Security is integrated throughout, providing protection of
critical data, applications, and communication links, even within
a distributed environment.
Resource Replication
Key servers can be replicated for increased availability with
automatic routing of client requests by the directory services.
Scalable Framework
Using server replication for increased application throughput and
the global directory services for accessing all available server
resources, DCE allows for incremental growth as business needs
dictate.
Hewlett-Packard has a long established history of leadership and
excellence in distributed computing. The Network Computing System
(NCS) was introduced by HP/Apollo in 1987, and was chosen by the
OSF to be the Remote Procedure Call (RPC) mechanism used in DCE.
In addition to pioneering with NCS, Hewlett-Packard has an entire
family of NCS-based distributed applications, such as OmniBack (a
network-wide central backup management system), NetLS (for central
software licensing), and Passwd Etc (for central control of users
passwords). Now, HP's distributed computing expertise is reflected
in its HP DCE/9000 products.
HP DCE/9000 consists of two software products: the DCE Core
Services and the DCE Application Development Tools.
DCE Core Services
The DCE Core Services contain the following DCE technologies:
o Remote Procedure Call (RPC): TCP and UDP versions
o CMA Threads: POSIX 1003.4a, a user-space implementation
o Naming: Cell Directory Services (CDS) with Global Directory
Agent (GDA) to Domain Naming Service (DNS)
o Security: USA version includes Data Encryption Services (DES)
library
o Distributed Time Service (DTS)
DCE Management Tools
In addition to providing a robust implementation, Hewlett-Packard
provides for efficient and cost-effective DCE use and
administration with industry-leading tools. HP has made it easier
to install, configure, and validate a DCE environment by
integrating the DCE installation/configuration process into
HP-UX's Motif-based, menu-driven System Administration Manager
(SAM), including software installation over the network from one
central server. A validation tool ensures that DCE installation
and configuration has been completed successfully and that a DCE
environment is ready to run. Ongoing DCE management is facilitated
with a graphical browser for the CDS namespace to both view and
edit entries in an efficient manner. Increased availability of
critical DCE resources is ensured with full replication of the CDS
and Security servers. Also included with the DCE Core Services is
HP Camera, a tool that records and reports the status of a DCE
cell before and during a failure to facilitate troubleshooting.
HP's DCE Core Services are fully-interoperable with OSF's DCE
reference platforms.
DCE Application Development Tools
The HP DCE Application Development Tools are unique in the
industry and are provided to increase the productivity of the DCE
application developer. A DCE RPC tracing and logging facility, as
well as an error reporting facility, are available to help debug
DCE applications and keep track of RPC communication between
clients and servers. Also included is an Instrumented Interface
Definition Language (IDL) compiler which can trace individual
thread and RPC activity in a distributed application, providing
in-depth insight with key timing information needed for debugging
and tuning of DCE applications. The DCE compiler can also be
integrated within HP's SoftBench development framework for
increased programmer efficiency. Several online DCE application
examples are included to help both the novice and expert DCE
programmer get started and shows how DCE interfaces are integrated
into client/server programs.
HP OpenRoad to Distributed Computing
HP DCE/9000 supports the HP 9000 Series 800 Business Servers and
Series 700 work-stations running HP*UX 9.0. HP DCE/9000 is the
foundation for a full range of distributed computing solutions
from HP. As well as providing a solid platform for DCE-based
applications, HP is adding special enhancements needed for
specific environments. For example, HP is providing the HP
Encina/9000 and CICS/9000 transaction management products for
ensuring data integrity in distributed OLTP applications. Both
Encina/9000 and CICS/9000 are built upon the HP DCE/9000
foundation. HP is also pursuing an aggressive program to provide
Distributed Management Environment (DME) compliant tools for
managing DCE-based applications and systems.
Hewlett-Packard is sharing its distributed computing expertise in
a series of detailed, technical DCE training programs, such as the
five-day HP DCE Application Programming class, as well as the one-
day introductory HP DCE Seminar. These classes are available at
your local HP education centers and are also offered on-site at
your work location.
For more information about HP DCE/9000 or HP's DCE training,
please contact your local HP Sales Representative.
[Illus. caption] Figure 2. HP's Distributed Computing Framework
Open Software Foundation, OSF, and Motif are trademarks of Open
Software Foundation in the U.S. and other countries.
Technical information in this document is subject to change
without notice.
(C) Copyright
Hewlett-Packard Company 1993
All Rights Reserved. Reproduction, adaptation, or translation
without prior written permission is prohibited except as allowed
under the copyright laws.
Printed in USA M0693
5091-7583E