Manuals / IBM / Computer Equipment / Server

IBM OS/390 manual Distributed Computing Services, ENetwork Communications Server, LAN Services

Models: OS/390

1 673
Download 673 pages 53.75 Kb
Page 44
Image 44

∙

∙

∙

∙

∙

∙

∙

Distributed Computing

−UNIX Application Services (Shell, Utilities, and Debugger)

−UNIX System Services (included in the BCP)

Distributed Computing Services

−DCE Base Services (OSF DCE level 1.1)

−DCE DFS (OSF DCE 1.2.1 level)

−DFSMS/MVS Network File System

eNetwork Communications Server

−VTAM (includes the AnyNet function)

−IBM TCP/IP

-CICS Sockets

-Host on Demand

-IMS Sockets

-Domain Name Server and WLM support (DNS/WLM)

Network Computing Services

−Domino Go Webserver for OS/390

-NetQuestion

-Internet Connection Secure Server

−IBM BookManager BookServer for World Wide Web

UNIX System Services

−OS/390 UNIX System Services Application Services

−OS/390 UNIX System Services Shell & Utilities

−OS/390 UNIX System Services Debugger

LAN Services

−LANRES

−LAN Server

−OSA Support Facility

Softcopy Publications Support

−BookManager READ/MVS

−Softcopy Print (includes Softcopy Print for DBCS Languages)

Optional Features

These are priced as well as unpriced features included in OS/390 integration-testing. The host-based features are capable of being dynamically enabled or disabled. As an example, here is a list of optional features for OS/390 Version 2 Release 5:

∙

∙

System Services

−JES3

−MVS/BDT File-to-File

−MVS/BDT JES3 SNA NJE

Security Server

−OS/390 Security Server (RACF and DCE Security Server at OSF DCE level 1.1)

20VSE to OS/390 Migration Workbook

Page 43 Page 45
Page 44
Image 44
IBM OS/390 Distributed Computing Services, ENetwork Communications Server, Network Computing Services, LAN Services
Page 43 Page 45

OS/390 specifications

IBM OS/390, a versatile operating system, was a cornerstone in enterprise environments and played a pivotal role in mainframe computing. Released in the mid-1990s, OS/390 combined the strengths of IBM's MVS (Multiple Virtual Storage) with new features and enhancements, targeting scalability, reliability, and performance in demanding business applications.

One of the key features of OS/390 was its robust support for multiple users and processes. The system allowed thousands of concurrent users to access applications and data, ensuring high availability and minimizing downtime—a critical requirement for many large organizations. This scalability was supported through various enhancements in memory management and processor scheduling, enabling optimal resource allocation across diverse workloads.

OS/390 was known for its superior workload management capabilities. The Workload Manager (WLM) component allowed administrators to define service policies, specifying how system resources would be allocated according to the priority of tasks. This ensured that critical business processes received the necessary resources while less critical tasks were managed more flexibly.

Another significant characteristic of OS/390 was its commitment to security. The operating system provided comprehensive security features, including user authentication, data encryption, and auditing capabilities. This focus on security was vital for organizations handling sensitive data, ensuring compliance with regulations and safeguarding against unauthorized access.

OS/390 also supported advanced technologies that facilitated integration and development. The system included features like the IBM CICS (Customer Information Control System) for transaction processing and IMS (Information Management System) for database management. These technologies allowed organizations to build robust, high-performance applications tailored to specific business needs.

The ease of network integration was another strength of OS/390. With the advent of the Internet and global connectivity, OS/390 systems could easily interface with various network protocols, enabling businesses to operate in a connected world. This inclusion paved the way for many organizations to expand their capabilities and offer new services, driving digital transformation.

In conclusion, IBM OS/390 represented a significant advancement in mainframe technology, combining scalability, security, and robust workload management. Its rich feature set and support for critical enterprise applications solidified its role as a vital component of many organizations' IT infrastructures, ensuring they could meet their operational challenges head-on while supporting future growth. As technology continues to evolve, the legacy of OS/390 remains influential in the realm of computing.