NOTE

Migrating to HP DCE 1.7

Migrating the Cell Directory Service from HP DCE 1.3.1

Migrating the Cell Directory Service from HP DCE 1.3.1

This section applies only to migrating from HP DCE 1.3.1 to HP DCE 1.7 (because HP DCE 1.3.1 is based on OSF DCE 1.0.3).

You should be aware of the following CDS considerations when migrating to HP DCE 1.7:

•Installation of HP DCE 1.7 automatically attempts to preserve any CDS defined cached servers from previous configurations of HP DCE. However, if a newly migrated HP DCE 1.7 node returns warnings about being unable to locate a CDS server, it may be necessary to manually specify the server location with a dcecp cdscache create command.

•To make full use of HP DCE 1.7 features, the directory version number of the root directory must be manually advanced to 4.0 after all CDS servers in the cell have been upgraded to HP DCE 1.7. (To determine the current directory version number, use the dcecp directory show /.: command, and look for the CDS_DirectoryVersion attribute.)

The procedure for doing this is discussed in “Managing CDS Directories - Upgrading the Directory Version on a Directory”, in the OSF DCE Administration Guide — Core Components. This procedure makes use of the following dcecp commands:

dcecp> directory modify /.: -add {CDS_UpgradeTo 4.0} dcecp> directory synchronize /.:

dcecp> clearinghouse verify /.:/clearinghouse_name dcecp> directory synchronize /.:

Note that the dcecp clearinghouse verify command must be run for every clearinghouse in the cell, and must be run directly on the CDS server node hosting each clearinghouse. The command will not work from a remote node.

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Migrating the Cell Directory Service from HP DCE
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UX DCE Software specifications

HP UX DCE Software, or Hewlett-Packard UNIX Distributed Computing Environment, represents a significant tool in the realm of distributed system architecture. Designed primarily for enterprise environments, HP UX DCE enhances the reliability, scalability, and manageability of applications over diverse networked systems.

One of the main features of HP UX DCE is its ability to integrate various computing platforms, enabling seamless communication and resource sharing across distributed nodes. This facilitates the creation of complex applications that can operate on a multitude of systems, thus enhancing operational flexibility. DCE employs standardized interfaces, which means applications written for one platform can run on any other platform that supports DCE, promoting cross-platform compatibility.

In terms of technologies, HP UX DCE utilizes Remote Procedure Calls (RPC) as a core feature. This mechanism allows different applications to communicate and invoke procedures on remote systems as if they were local calls. Additionally, DCE includes a robust security model that incorporates Kerberos for authentication, ensuring that communication between nodes remains secure and protected against unauthorized access.

Another significant characteristic of HP UX DCE is its distributed file system, which allows for transparent file access across different machines. The DCE File System (DFS) provides a unified namespace and manages data replication and consistency across distributed storage resources. This reduces the complexity of data management and enhances data availability.

HP UX DCE also supports a variety of programming languages, making it accessible for developers accustomed to different coding environments. This versatility encourages widespread adoption and innovation, as developers can leverage existing skills to create distributed applications.

Furthermore, HP UX DCE is built for high availability, ensuring that critical applications remain responsive even in the face of hardware or network failures. Its inherent component redundancy and fault-tolerant architecture are designed to minimize downtime, which is essential for mission-critical applications in enterprise scenarios.

In conclusion, HP UX DCE Software provides a comprehensive framework for developing, deploying, and managing distributed applications. Its core features such as RPC support, a secure authentication mechanism, a robust file system, and cross-platform compatibility make it a vital resource for organizations aiming to leverage distributed computing effectively. As enterprises evolve, HP UX DCE stands out as an influential solution in the dynamic landscape of distributed environments.
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