Best in class random sequential performance reliable field proven 7th generation 5 disk design compared to prior generation 7k4000 50 more capacity 6tb vs 4tb 30 better power efficiency wattstb up to 3x faster random write performance using media cache technology 25 faster sequential readwrite performance 12gbs sas and 6gbs sata for compatibility with high performance data centres 128mb cache buffer improves response time and data management