He moved to SGI in January 1998, becoming chairman of the board and CEO, succeeding Edward R. McCracken. During his time in the systems business, Belluzzo led both HP and SGI through the transition from proprietary systems to industry standard solutions.
In January 1998, Belluzzo took over as chairman of the board and CEO at SGI, succeeding Edward R. McCracken. He guided both HP and SGI through a significant shift from proprietary to industry-accepted systems during his time in the systems division.