Migrating to the Solaris Operating System: The Discipline of UNIX-to-UNIX Migrations

The migration was successfully undertaken. Sun used the Sun Tone Architecture Methodology for Migration to move the customer's business-critical financial and insurance applications from HP/UX to the Solaris OS using a rehosting strategy supplemented by reverse engineering, source code porting, and retirement/replacement techniques. This was undertaken within an acceptable system down-time window with zero business downtime.

The project life cycle articulated in Sun's AIM methodology was a key enabler to the success of the project. The case studies presented in this book show how the application of methodology makes migration projects simpler and less risky.