As400

The AS/400's longevity is largely due to its unique, forward-thinking architecture:

The platform has undergone several name changes, often causing confusion for those outside the industry:

: Hardware consolidated into IBM Power Systems , with the operating system becoming IBM i . Core Architectural Features The AS/400's longevity is largely due to its

: This architecture treats all RAM and disk storage as one massive virtual address space, simplifying data management. Why It’s Still Relevant in 2026

: This layer separates applications from the underlying hardware, allowing companies to upgrade to new processors (like Power10) without modifying their software. : Unlike other servers, the Db2 for i

: Unlike other servers, the Db2 for i relational database is built directly into the operating system.

: Everything on the system—files, programs, and devices—is treated as an object , which significantly enhances security and stability. 2000 : Rebranded as iSeries

: AS/400 launched as the successor to System/36 and System/38. 2000 : Rebranded as iSeries . 2006 : Renamed System i .