AIX Distributed Computing Environment (DCE)
Distribute the POWER
The AIX(r) Distributed Computing Environment
(DCE) product family Version 1.3 extends the industry-leading
distributed computing technology to the RISC
System/6000(r) (RS/6000(tm)) workstations
AIX DCE Version 1.3:
- Is a high performance implementation of DCE Version 1.0.3
from Open Software Foundation(r) (OSF).
- Provides a comprehensive, integrated set of services
that supports transparent communications and resource sharing
across heterogeneous networks.
- Allows design and implementation of secure distributed
applications that match business needs.
- Includes support for the Enhanced Distributed File System
(EDFS), the distributed data sharing component of DCE.
- Can participate in a High Avail-
ability Cluster Multi-Processing/
6000 (HACMP/6000(tm)) standby
takeover if required.
- Provides a user data masking feature for non-US customers.
- Enhances system management by including:
- Central administration with AIX System Management Interface
Tool (SMIT); and
- A new DCE Manager product for monitoring the entire
DCE is the foundation for distributed, client/server computing
in the open enterprise for the 1990s. With DCE, you have
access to enterprisewide data and hardware. Even
better, you can develop distributed applications in a
network-independent manner without having to develop generic
functions like RPC, security, naming, and time services.
So, if your business needs programs like distributed decision
control, office productivity tools, program distribution
line transaction processing (OLTP)
systems, DCE is your solution.
Best of all, DCE allows you to exploit the unique power and
flexibility of RS/6000 workstations and servers to run a broad
range of distributed applications. And, DCE builds on the
commercial strength of AIX(tm), an enhanced version of the
UNIX(r) operating system primed with features
like real-time support, system management tools, and superb
file and volume capabilities.
The following components comprise AIX DCE:
- AIX DCE Base Services, which provides threads, remote
procedure call, cell directory, security clients, time
services, basic distributed file system services, and
- AIX DCE Cell Directory Server, which provides a highly
available, efficient naming service for all network objects.
- AIX DCE Security Server, which provides data encryption
using a trusted, third-party model and a two-step process of
authentication and authorization, based on Kerberos(tm)
Version 5. Security replication is supported.
- AIX DCE Enhanced Distributed File System (EDFS), which
extends the basic distributed file system services by
providing replication, cloning and file set aggregation.
- AIX DCE Threads, which provides a separate packaging
of DCE user threads that programmers can use to
exploit inherent parallelism in a distributed environment
(support for threads is also offered in the base services).
- AIX DCE Global Directory Services, which provides a
distributed, replicated directory service that can be used
as the higher level directory service to allow multiple DCE
cells to share directory location information (any user
application can also use the
CCITT X.500/ISO 9594 industry standard APIs).
In addition, the DCE for AIX family now provides advanced
monitoring of the DCE environment through the
DCE Manager for AIX and an NFS to DFS authenticating gateway
(both separately orderable products).
Here are some of the ways you can put DCE to work for you:
- Establish a coherent, standards-
based, open computing environment
where all users
can transparently share files, communications, applications
and other resources -- even if they are working on
workstations and operating systems from different vendors.
- Provide access to information wherever it is stored without
exposing the network's complexity to the end user, system
administrator or application developer.
- Prevent fraudulent access, maintain the user registry
database, and generally ensure the integrity and privacy
of files and applications across your heterogeneous
- Access remote files in a convenient, timely
fashion -- regardless of
the size of your network, geographic
location or hardware type.
- Establish an open, distributed OLTP environment with
Encina for AIX and CICS/6000(tm) -- each allowing you
to develop and run business applications on RS/6000
Here are some of the reasons why IBM's RS/6000 stands out
as the best solution for your
technical and commercial computing needs:
IBM's innovative POWER Architecture (tm), combined
with a 32-bit Micro Channel(r) bus, for
extraordinary processing power and floating-point
from 8.8 double-precision
Linpack MFLOPS in the POWERstation/POWERserver
230 to 38.1 MFLOPS in the POWERserver 980B. This makes
RS/6000 the perfect choice for numeric-intensive jobs and
complex graphics applications.
Support for thousands of technical and commercial applications
that gives you the flexibility to
run everything from engineering design packages to
business accounting in multiuser environments.
with most IBM and non-IBM systems,
a must in today's multivendor environments. DCE has been
tested for interoperability with DCE on other IBM platforms,
such as OS/2(r), and on other vendors' offerings.
World-class service and support,
every RS/6000 POWERstation and POWERserver.
Open, distributed, commercial power
Encina for AIX, and CICS/6000, so you can implement b
usiness-criticalapplications on RS/6000 POWERstations and
- Client/server architecture
- Masks the physical complexity of a network from the
programmer, user and administrator
- Allow you to build applications that can execute multiple
tasks within a single process
- Based on POSIX(tm) 1003.4a Draft 4 standard
- Available in AIX DCE Base Services, or separately as
AIX DCE Threads
- Remote procedure call (RPC)
- Extends the familiar procedure call model by supporting
direct calls to procedures on remote systems, enabling
programmers to develop distributed applications as easily
as traditional, single-system programs
- Includes a pipe mechanism to allow bulk transfer of data
- Features a compiler that converts RPCs into portable
C-language source code
- Handles system vendor data representation conversions
- Time service
- Provides fault-tolerant clock synchronization across
WANs and LANs for the sequencing,
duration and scheduling of applications
- Cell directory service
- Gives you a common naming service for all resources on
the network, such as servers, files, disks or print queues
- Allows users to refer to a resource by the same name
even if the network address changes
- Greatly increases the efficiency and speed of lookups
by automatically caching the results of previous lookups
- Global directory service
- Provides a global directory based on industry standards,
CCITT X.500/ISO 9594:1988
- Security service
- Features a user registry for user account management
- Provides trusted, third-party authentication and
access control lists (ACLs) for user authorization
- Includes security replication feature for improved
- Enhanced Distributed File System
- Builds on the fundamental features of DCE: security,
threads, RPC, directory and time services
- Accesses transparently files anywhere on the network
- Improves administration through filesets
- Boosts reliability through a log-based physical file
system and through the data replication feature
- Provides authenticated access from any NFS client
through DCE NFS to DFS Authenticating Gateway
- Administrative tools
- Allow any machine in the network to perform as an
administrative console for such tasks as adding or
deleting users, managing namespace entries, and
manipulating access control lists (ACLs) on DCE objects
- Provide advanced monitoring of DCE environment through
optical DCE Manager for AIX product
- Hardware requirements
- All POWERstation/POWERserver models configured with a
minimum of one supported display
with keyboard and mouse, or on supported ASCII terminal
- Memory requirements*
- Recommended minimum for all DCE programs is 32MB; DCE
Base Feature for clients can run
at 16MB but 32MB is recommended
- Fixed disk requirements** (approximate)
- AIX DCE Base Services (client): 23MB + 10MB DFS client cache
AIX DCE Cell Directory Server: 25MB
AIX Security Server: 26MB
AIX DCE Enhanced Distributed File Server: 27MB
AIX InfoExplorer(tm) publications: 25MB
AIX DCE Threads: 2MB
AIX DCE Global Directory Client: 5MB
AIX DCE Global Directory Server: 3MB
AIX DCE NFS to DFS Authenticating Gateway: 23MB
AIX DCE Manager Messages: 12MB
- Operating system
- AIX Version 3.2.5
- Packaging and installation
- Can be preinstalled on system fixed-disk storage or shipped
on 1/4-inch or 8mm tapes
* These requirements do not take other application demands
** Consult your IBM(r) marketing representative
for more current information, including
paging space requirements.
For more information about the AIX DCE product or the entire
RS/6000 and AIX family, call your IBM
marketing representative, IBM
Business Partner, or IBM Direct:
1 800 IBM-CALL (1 800 426-2255).
In Canada call 1 800 363-RISC
(1 800 363-7472).
You can also call 1 800 IBM-4FAX
(1 800 426-4329), and more information will be faxed
immediately to your location.
If you have access to the Internet, you can find
additional information on IBM's
Worldwide Web server at http://www.ibm.com
- AIX, IBM, Micro Channel, OS/2 and RISC System/6000 are
trademarks of International Business Machines Corporation.
- CICS, CICS/6000, HACMP/6000, InfoExplorer, POWER Architecture,
POWERserver, POWERstation and RS/6000
are trademarks of International Business Machines Corporation.
- Open Software Foundation is a trademark of Open Software
UNIX is a registered trademark in the United States
and other countries, licensed exclusively through
X/Open Company, Limited.
X/Open is a registered trademark of X/Open
- Encina is a trademark of Transarc Corporation.
POSIX is a trademark of The
Institute of Electrical and Electronic Engineers (IEEE).
- All other products are trademarks or registered
trademarks of their respective companies.
- Values shown here are the results of development-level
While these values should be indicative of generally available
systems, no warranties or guarantees are stated or implied by
IBM. IBM recommends application-oriented testing for performance
predictions and offers the above commonly reported benchmarks
only as an initial indicator. Additional information on these
tests is available from your IBM local Branch Office or
Linpack DP: Double Precision, n=100 results with AIX
XL FORTRAN compiler with optimization.
Units are megaflops(MFLOPS).
(c)International Business Machines Corporation 1994
1133 Westchester Avenue
White Plains, NY 10604
Produced in the United States of America
All Rights Reserved
References in this publication to IBM products
or services do not imply that IBM intends to
make them available outside the United States.
Photographs show engineering and design models.
Changes may be incorporated in production models.
This equipment is subject to FCC rules. It will
comply with the appropriate FCC rules before
final delivery to the buyer.
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Last modified: Tue Oct 25 15:36:05 CDT 1994