Five-9s Availability Achieved Through Six Sigma Discipline

EMC uses Six Sigma methodology to drive availability improvements in its products to five-9s performance levels. ...

... "Traditionally, only high-end storage systems designed for the most mission-critical applications have delivered Five 9s availability. EMC designed an entirely new midrange architecture - UltraScale - to deliver the highest levels of availability in affordable, scalable and easy-to-use systems that meet a wide range of storage needs. Over the past year, EMC utilized a comprehensive Six Sigma-based approach to track and calculate availability metrics of both the Fibre Channel and Fibre Channel/iSCSI versions of the EMC CLARiiON CX3 UltraScale systems, including a thorough analysis of the root cause of unplanned customer system downtime whether hardware, software or process-related. " ...

Via EMC: EMC Clariion CX3 Ultrascale Systems Achieve Highest Midrange Storage Availability and Quality Benchmark