Seagate ST22000NT001 22TB IronWolf Pro 3.5' SATA3 NAS Hard Drive - Capacity: 22TB - Interface: SATA 6Gb/s Connector - CMR Recording Technology - Helium Drive Design - Rotational Vibration RV Sensors - MTBF: 2,500,000 Hours IronWolf™ Pro is designed for commercial and enterprise NAS. Delivering Tough, Ready and Scalable 24x7 performance in multi-bay, multi-user environments Key Advantages Optimized for NAS with AgileArray Always On, Always Accessible All-CMR Portfolio Up to 22TB Class-Leading Reliability and Dependability Rotational Vibration (RV) sensors. IronWolf Health Management (IHM) Peace of mind with Data Recovery Best-Fit Applications Commercial and Enterprise NAS Video Production RAID and Shared Network Storage Workstations and Servers Spec Interface SATA 6Gb/s Drive Bays Supported Unlimited Recording Technology CMR Drive Design (Air or Helium) Helium Workload Rate Limit (WRL) 550 Rotational Vibration (RV) Sensors Yes Cache (MB) 512MB Spindle Speed (RPM) 7200RPM Shock, Operating 2ms (Read/Write) (Gs) 40/40Gs