Biographical Sketch: Ivan Gelb is President of Gelb Information Systems Corporation (GIS), a consulting firm that provides management and technical consulting services in the U.S. and internationally. His extensive Information Technology (IT) background includes: determination of optimum hardware and software requirements for mainframe and client-server systems; effectiveness evaluation of computer systems and related organizations; database and communications systems design and implementation; computer systems end-to-end availability management, performance management and capacity planning; development of software packages and proprietary measurement data analysis techniques.