The System i 515 Express, an easy-to-install-and-manage system, catering to businesses with 5 to 40 users, offers i5/OS® pricing by user, which delivers more flexibility so you can pay according to the number of users you support.
The System i 525 Express, an easy-to-install and manage system, for businesses with 30 to unlimited users, offers the reliability you expect from IBM with the performance and scalability required to deploy even the most demanding applications. The 525 Express also offers i5/OS pricing by user, making it a good alternative to deploying Windows-based servers.