WD Red NAS hard drives are the essential solution for NAS applications. These drives are cool and quiet, and offer optimum compatibility in 24×7 NAS systems with up to eight bays. Storage for 1 to 8 bay NAS solutions – WD Red™ is designed specifically for NAS systems that have 1 to 8 drive bays in both 3.5-inch and 2.5-inch form factors. The drives are designed and extensively tested for compatibility in the unique 24×7 operating environment and for the demanding system requirements of home and small office NAS. NASware grows to 3.0 – WD Red now supports small NAS systems from 1 to 8 bays thanks to NASware 3.0, which further improves drive compatibility and reliability. At 48 TB of potential capacity in an 8 bay system, WD Red expands your NAS experience. Need help? We offer premium support – Every WD Red hard drive comes with our world-class professional support services including a premium dedicated 24/7 support line (available in English, other regional support hours vary) and a 3-year limited warranty.* * Support outside of normal business hours is available in English only. Go to support.wd.com for further details. Enhanced reliability – Your NAS system is always on. A highly reliable drive is essential. With a 35% MTBF improvement over standard desktop drives, the WD Network drives are designed and manufactured to be a more reliable and robust solution for your NAS system. 3D Active Balance Plus – Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance over time. Longer warranty coverage –- WD Red NAS hard drives are backed by a 3-year limited warranty for greater peace of mind. The WD® advantage –- WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details. Business critical RAID environments – Please consider WD NAS Hard Drives for all multi-bay consumer NAS environments. WD Red hard drives for up to 8 bay chassis and WD Red Pro hard drives for 8-16 bay chassis.