$300 Million Over Several Years Amount invested: $300 million over several years Organization: Large telecommunications company Original Plans: Move all legacy applications off mainframe (Amdahl/MVS/DB2) to UNIX/Oracle onto Sequent super minis. Unanticipated problems: 1. Discovered that after only 10% of applications moved, they needed 2 times as many system programming staff for Unix than for the 90% still on MVS. It took 10 Unix system administrators to manage 20 Sequent servers. 2. Sequent I/O rate of 180/sec created performance bottlenecks. The mainframe was handling I/O's at 2,000/sec regularly, and 3,000/sec peak. 3. normal response time for applications on the UNIX/Oracle systems was 5 seconds. 4. Unix systems required twice as many disks as MVS, had to mirror data because they lost disks frequently. Oracle needed twice as much disk as DB/2. 5. Security administration for Unix took twice as many people as for MVS. Project Status: Project abandoned, company left majority of applications on mainframe, started investigating the possibility of using Windows NT servers to replace Unix servers.