WD Red Pro 22TB 3.5" SATA III 7200RPM CMR NAS Hard Drive (WD221KFGX)

WD Red Pro 22TB 3.5" SATA III NAS Hard Drive

The WD Red Pro is purpose-built for power users and medium-sized businesses managing rapidly growing data in high-demand NAS environments. Designed specifically for NAS systems with up to 24 bays, the WD Red Pro handles high-intensity 24/7 workloads with a 300 TB/year workload rating, 7200 RPM spindle, and a massive 512MB cache buffer — delivering the performance needed for archiving, protecting, and sharing data across large teams and multiple data-hungry applications.

Built on proven CMR (Conventional Magnetic Recording) technology for maximum reliability and RAID compatibility, every WD Red Pro includes NASware™ 3.0 — WD's exclusive advanced firmware that optimizes compatibility, integration, upgradeability, and reliability in NAS and RAID environments. A multi-axis shock sensor and dynamic fly height technology protect data in large multi-drive enclosures, while 3D Active Balance™ Plus technology ensures stable, vibration-resistant operation. Backed by a 5-year warranty and RoHS compliant.

Key Features

• 22TB Capacity — Maximum density for large NAS deployments up to 24 bays
• NASware™ 3.0 — Exclusive firmware for seamless NAS integration, RAID compatibility, and robust data protection
• CMR Recording Technology — Proven reliability and full RAID compatibility
• 300 TB/Year Workload Rating — Built for sustained 24/7 high-intensity NAS workloads
• 512MB Cache Buffer — Large cache for smooth multi-user file sharing and access
• Multi-Axis Shock Sensor — Detects and compensates for shock events in large bay NAS enclosures
• 3D Active Balance™ Plus — Enhanced vibration resistance for reliable operation in multi-drive systems
• Extended Drive Testing — Each drive tested for extended reliable operation before shipping
• RoHS Compliant — Environmentally responsible design
• 5-Year Warranty — Western Digital's full NAS-grade coverage

Technical Specifications

• Capacity: 22TB
• Interface: SATA III (SATA/600)
• Form Factor: 3.5"
• Recording Technology: CMR
• Spindle Speed: 7200 RPM
• Cache Buffer: 512MB
• Workload Rating: 300 TB/year
• NAS Bay Support: Up to 24 bays
• Weight: 1.48 lb
• Dimensions: 5.8" x 4" x 1"
• Part Number: WD221KFGX
• Country of Origin: Thailand
• Warranty: 5 Years
• Device Support: NAS, Storage System