The program, called Green Streak, runs through the end of the year but offers deeper discounts this quarter, IBM said Monday.
The iSeries line, formerly known as AS/400 systems, typically are aimed at midsize companies and packaged with software for specific tasks. The productswith IBM's Unix servers but have software features drawn from IBM's top-end zSeries mainframe line. IBM has continued strong support for the iSeries products, despite skepticism from analysts that Windows and Unix systems from Sun Microsystems, Hewlett-Packard and Dell Computer would swarm over the smaller iSeries market.
The Green Streak name is a reference to the "green screen" text applications frequently found on iSeries computers.
Discounts for the lower-end i270 servers run from $23,000 to $47,000, while discounts for the more powerful i820 run between $55,000 and $110,000, spokesman Glen Brandow said.
IBM said there are 100,000 iSeries and AS/400 systems eligble for the discount in the United States and 250,000 worldwide.