In the world of enterprise computing, few systems have withstood the test of time like the IBM iSeries AS400. Renowned for its reliability, scalability, and versatility, the AS400 has played a pivotal role in businesses of all sizes for decades. In this blog, we will delve into the rich history of IBM iSeries AS400, explore its unique characteristics, discover new uses of its services, and shed light on frequently asked questions surrounding this remarkable platform.

History of IBM iSeries AS400

The IBM iSeries AS400 traces its roots back to the mid-1980s when it was originally introduced as the Application System/400. Designed to be a comprehensive and integrated system, it aimed to consolidate business applications into a single, cohesive platform. Over time, the system evolved and was rebranded as the iSeries, and later, the IBM i. Through each iteration, IBM continued to enhance the capabilities of the platform, ensuring it remains relevant and competitive in the ever-changing IT landscape.

New Uses of IBM AS400 Services

Despite its legacy, the IBM iSeries AS400 continues to evolve, adapting to the demands of modern business environments. The system has found new uses beyond its traditional strengths in finance, manufacturing, and logistics. Today, it powers a wide range of applications, including cloud-based solutions, data warehousing, and big data analytics. Its robust security features and stable performance have made it a favored choice for industries with strict compliance requirements, such as healthcare and finance.

IBM Db2 Mirror for IBM AS400 iSeries

The introduction of IBM Db2 Mirror for iSeries marks a significant milestone for the platform. This high-availability and disaster recovery solution ensures continuous availability of critical data and applications, reducing the risk of downtime and data loss. By employing real-time replication between two geographically separate systems, businesses can maintain operations even in the face of unforeseen disasters, offering uninterrupted service to customers.

Unique Characteristics of IBM AS400 iSeries

What sets the IBM AS400 iSeries apart from other systems is its unique architecture. It is built on a Power Systems server, featuring a tightly integrated operating system known as IBM i. This integration results in exceptional efficiency and optimized performance, allowing AS400 to handle a broad spectrum of workloads with ease. Its single-level storage architecture simplifies data management, while the object-based system facilitates seamless integration of applications and data.


Additionally, the IBM iSeries AS400 boasts an outstanding security track record. It has been lauded for its role in safeguarding sensitive business data, thanks to features like object-level security and a built-in firewall. This reputation has earned it trust in industries where data protection is paramount.

Integrated Web Services for IBM AS400 iSeries

To stay relevant in the digital age, the IBM iSeries AS400 has embraced modern technologies like integrated web services. By leveraging RESTful APIs, the platform enables smooth communication between web applications and IBM i-based applications. This integration facilitates a seamless user experience and allows businesses to bridge the gap between their legacy systems and the web.


The IBM iSeries AS400 remains a reliable and powerful platform that has stood the test of time in the fast-paced world of technology. Its rich history, unique characteristics, and continuous evolution make it a compelling choice for businesses seeking a versatile and robust computing solution. From its integration of web services to the introduction of IBM Db2 Mirror, the platform continues to adapt and excel in meeting the needs of modern enterprises. As technology progresses, the IBM iSeries AS400 will likely continue to play a pivotal role in driving businesses forward for years to come.