12 TB 3.5" 7200 RPM Serial ATA III. NAS HDD. Storage drive buffer size: 256 MB. 6 Gbit/s. 690 g. The Best Comes From Within. Seagate has dominated the data storage industry for 40 years. We understand your unique data storage challenges, and crafted the IronWolf® and IronWolf Pro 14 TB NAS hard drives to help you achieve your goals. Be Tough. Be Ready. For everything NAS, there’s IronWolf and IronWolf Pro — always on, always working. Built for multi-user environments and high workload rates, these NAS hard drives are enhanced with AgileArray technology for optimal reliability and system scalability. Drive Health and Data Recovery. IronWolf Health Management (IHM) means better drive health. When IronWolf or IronWolf Pro hard drives are integrated into compatible network attached storage (NAS) systems, the overall system reliability increases because the NAS system is constantly monitored and users are alerted if needed. Built for Work. Built for Performance. Multiple users can confidently upload and download data on a NAS system populated with IronWolf hard drives. All IronWolf hard drives are equipped with RV sensors to maintain performance in multi-bay NAS enclosures.