For Power Systems including AS/400, iSeries, and System i


Companies rely on an efficient IT infrastructure to support business-critical applications. They need to know that their systems and business processes are deployed to meet the highest service levels defined by their business units plus can be adapted to handle every new business opportunity. IBM i (formerly known as i5/OS®) running on an IBM Power Systems™ server offers a highly scalable and virus resistant architecture with a proven reputation for exceptional business resiliency. Running applications based on i has helped companies over many years to focus on innovation and delivering new value to their business, not just on managing their data center operations.

Having a more dynamic infrastructure is all about selecting the right systems and software to enable businesses to move with agility and speed. Getting there with IBM i means implementing proven solutions on a platform you can trust. By choosing the latest Power® platform, IBM i applications get world class performance plus dynamic infrastructure flexibility, with the opportunity to lower monthly operations costs.

IBM i integrates a trusted combination of relational database, security, Web services, networking and storage management capabilities. It provides a broad and highly stable database and middleware foundation for efficiently deploying business processing applications, with support for over 5,000 solutions from over 2,500 ISVs. i solutions are offered through an extensive, highly skilled worldwide network of IBM Business Partners that is backed by IBM’s trusted services and support infrastructure.

IBM develops, fully tests and preloads the core middleware components of i together upfront, whereas on other platforms, operating system, database and middleware integration is done in the data center. The preintegration and testing of i is a key factor in enabling companies to deploy applications faster and maintain them with fewer staff. Virtualization and workload management are also built into i to enable you to run multiple applications and components together on the same system, driving up system utilization and delivering a better return on IT investments.

Features and Benefits

  • Integrated middleware for efficient business processing
  • Virtualized to manage multiple applications and processes
  • Optimized for exceptional business resilience
  • Trusted security with auditing and compliance tools
  • Designed for open application design choices
  • Simplified operations and storage management
  • Scalable to handle nondisruptive business growth


The IBM i platform provides comprehensive solution capabilities for a highly secure system environment. Sophisticated technologies combine to minimize the potential risk posed by security threats, while better enabling you to rapidly adapt and respond to changing security policy requirements.

  • Industry unique, virus-resistant, object-based architecture
  • Integrated security features
  • System monitoring and management capabilities
  • World-class ISV security portfolio


The IBM i operating system has flexible licensing options to meet your specific business needs.

Small and mid-sized systems

For small and mid-sized systems, the i operating system has processor and user entitlements. A processor entitlement is needed for each processor running the i operating system. A user entitlement is needed for each concurrent user that is authenticating with the i operating system. A base number of user entitlements are included with the express offerings and additional users entitlements can be per purchased in blocks of 5 or 10 users depending on the server model. In addition, Unlimited Users, External Access and Unlimited Collaboration Users options are available.

Large systems

For large systems, the i operating system has processor entitlements. A processor entitlement is needed for each processor running the i operating system. In addition, for these models, customers have the option to purchase i operating system Application Server entitlements. The Application Server entitlement provides an entitlement for the i operating system without a entitlement for DB2. Customers who wish to deploy applications which do not require DB2 will find the i operating system Application Server license to be a more affordable option for deploying these applications.