The Western Digital Red Pro 12TB NAS Internal Hard Drive (WD122KFBX) is engineered for high-intensity 24×7 multi-user commercial and enterprise NAS environments. With a 12TB capacity, 7200 RPM spindle speed, and 512MB cache, this 3.5-inch SATA hard drive delivers exceptional performance and reliability for medium to large businesses. Designed for RAID-optimized NAS systems with unlimited bays, it incorporates advanced NASware™ technology to optimize performance and ensure seamless integration. The drive is rated for workloads up to 550TB per year and offers a Mean Time Between Failures (MTBF) of up to 2.5 million hours, highlighting its durability and dependability. Additionally, built-in rotational vibration (RV) sensors anticipate and counteract disturbances caused by increased vibration, ensuring consistent performance in multi-drive NAS setups. A 5-year limited warranty provides added peace of mind.