 The 3000 supports subsequent OS releases, including all z/OS releases up to and including V1R5.However, the Multiprise 3000 is rapidly losing popularity among z/OS and Linux/390 users because it does not support z/Architecture.Multiprise 3000 users are upgrading to 64-bit models, especially the System z9 BC, to run newer software such as DB2 Version 8 for z/OS.