Operations Management, Recovery Management

VM/ESA and its customers exclusive technical advantages not available in any other operating system platform.

Operations Management

With PROP (VM/ESA′s PRogrammable OPerator) you can cut your console traffic substantially. This saves time and reduces errors.

Recovery Management

You can build guest virtual machines to simulate systems at your organization′ s other sites. So, VM/ESA can become a disaster-recovery backup site.

Interactive Computing, Application Development and Support

Although it is not normally considered a guest function, VM/ESA′s CMS is the development and interactive platform-of-choice for many IBM customers both S/390 and non-S/390. One reason for this is VM/ESA offers many practical application development and support tools that make the job easy.

Interactive Program Development Tools

CMS, XEDIT, and REXX, NetREXX, Pipelines and others provide elegant, powerful, and convenient services to help you write programs.

Debug and Trace Tools

Debugging under CMS is much easier than in a batch environment, because you can see the results right away and make changes easily. With the advent of INSPECT and its truly interactive symbolic debugging, you can examine your code, executing one instruction at a time, making any necessary changes.

VM/ESA supports IBM′s Language Environment (LE), VisualAge, VisualLift and a host of others products related to S/390 based application development and support. These tools supported by VM/ESA speed up application development and support and are a strong complement to your overall business.

Interactive Data Analysis and Reduction

CMS Pipelines, REXX, XEDIT, and DB2 constitute a powerful toolbox for reducing, distributing, and analyzing data originating from the VSE, OS/390, TPF, and other systems running as a guest on VM/ESA.

Access to VM/ESA CMS Applications

VM/ESA supports many applications, such as several Web Server Products, OfficeVision, CMS OpenEdition, DB2, TCP/IP with a wide variety of the TCP/IP applications, TCP/IP Sockets APIs available in products such as REXX and CMS Pipelines. These products and others are attractive to customers running production and/or test OS/390, VSE, TPF systems on VM/ESA.

Server Consolidation

VM/ESA tools and functions and VM/ESA′s Guest Support give customers the ability to consolidate many diverse distributed systems into a single image. VM/ESA does this at a fraction of the cost required to maintain and service many

428VSE to OS/390 Migration Workbook

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.

IBM OS/390 Operations Management, Recovery Management, Interactive Program Development Tools

Models: OS/390