IBM s390

Review Cycle

May 2026

Read Time

4 min read

Technical Depth

71% Detailed

IBM s390
Source: 2b

Executive Summary

The IBM System/390 is a discontinued mainframe product family that implements the ESA/390 instruction set architecture, the fifth generation of the System/360 instruction set architecture. This product family was first introduced with the Enterprise System/9000 (ES/9000) family of computers. The IBM System/390 is significant in the history of computing as it represents a major milestone in the development of mainframe systems. With its introduction, IBM aimed to provide a powerful and scalable platform for large-scale computing applications. The IBM System/390 has a rich history, dating back to its introduction in the 1990s. Over the years, it has undergone significant transformations, with advancements in technology and architecture. The system's architecture is based on the ESA/390 instruction set, which provides a robust and efficient platform for executing complex instructions. The System/390 has been widely used in various industries, including finance, healthcare, and government, due to its reliability, security, and performance. In addition to its technical capabilities, the IBM System/390 has also played a crucial role in shaping the mainframe industry. Its introduction marked a significant shift towards more powerful and efficient systems, which has had a lasting impact on the development of modern computing. The System/390's influence can still be seen in modern mainframe systems, which continue to evolve and improve with advancements in technology.

Architecture & Design

The IBM System/390 architecture is based on the ESA/390 instruction set, which is the fifth generation of the System/360 instruction set architecture. This architecture provides a 64-bit addressing capability, allowing for large amounts of memory to be addressed. The System/390 also supports a wide range of peripherals and devices, making it a versatile platform for various applications. The System/390's design is centered around a modular architecture, which allows for easy upgrades and maintenance. The system's components are designed to be highly reliable and fault-tolerant, ensuring minimal downtime and maximum productivity. The System/390 also features advanced security mechanisms, including encryption and access control, to protect sensitive data and prevent unauthorized access. One of the key features of the System/390 is its support for multiple operating systems, including OS/390. This allows users to run a variety of applications and workloads on the system, making it a highly flexible and adaptable platform. The System/390 also supports a range of programming languages, including COBOL, PL/1, and Assembler, which provides developers with a wide range of options for creating custom applications. The System/390's architecture has undergone significant changes over the years, with advancements in technology and the introduction of new features. The system's design has been refined to provide improved performance, reliability, and security, making it a highly robust and efficient platform for large-scale computing applications.

Performance & Thermal

The performance of the IBM System/390 is not publicly disclosed in the provided research material. However, it is known that the system is designed to provide high-performance processing capabilities, making it suitable for demanding applications such as scientific simulations, data analytics, and transaction processing. The thermal characteristics of the System/390 are also not publicly disclosed in the research material. However, it is likely that the system is designed to operate within a specific temperature range, with built-in cooling mechanisms to prevent overheating and ensure reliable operation. In terms of performance, the System/390 is known to support a range of processors, including the z10 processor, which provides high-performance processing capabilities. The system also supports advanced storage systems, including disk arrays and tape libraries, which provide high-capacity storage and fast data access.

Market Positioning

The IBM System/390 is positioned as a high-end mainframe system, designed for large-scale computing applications. The system's pricing is not publicly disclosed in the research material, but it is likely that the system is priced competitively with other mainframe systems on the market. The System/390 is targeted at large enterprises and organizations that require high-performance, reliable, and secure computing systems. The system's advanced features, including its support for multiple operating systems and programming languages, make it an attractive option for organizations with complex computing needs. In terms of market positioning, the System/390 is part of a broader portfolio of mainframe systems offered by IBM. The system is designed to provide a high level of compatibility with other IBM systems, making it easy for organizations to integrate the System/390 into their existing infrastructure.

Verdict

The IBM System/390 is a significant product in the history of computing, representing a major milestone in the development of mainframe systems. With its advanced architecture, high-performance processing capabilities, and robust security features, the System/390 is a highly capable platform for large-scale computing applications. While the System/390 is no longer a current product, its legacy continues to influence the development of modern mainframe systems. The system's design and architecture have provided a foundation for the development of more advanced systems, which continue to evolve and improve with advancements in technology. In conclusion, the IBM System/390 is a highly significant product that has played a crucial role in shaping the mainframe industry. Its advanced features, high-performance capabilities, and robust security make it a highly capable platform for large-scale computing applications. While the system is no longer widely used, its legacy continues to influence the development of modern computing systems.

Specifications

ArchitectureESA/390
Instruction Set64-bit
Addressing Capability64-bit
Operating SystemsOS/390
Programming LanguagesCOBOL, PL/1, Assembler
Processorsz10 processor
StorageDisk arrays, tape libraries

Frequently Asked Questions

What is the IBM System/390?

The IBM System/390 is a discontinued mainframe product family that implements the ESA/390 instruction set architecture.

What is the architecture of the IBM System/390?

The IBM System/390 architecture is based on the ESA/390 instruction set, which provides a 64-bit addressing capability.

What operating systems are supported by the IBM System/390?

The IBM System/390 supports multiple operating systems, including OS/390.

What programming languages are supported by the IBM System/390?

The IBM System/390 supports a range of programming languages, including COBOL, PL/1, and Assembler.

What is the performance of the IBM System/390?

The performance of the IBM System/390 is not publicly disclosed in the provided research material.