WD Red Pro 22TB NAS Hard Drive, 3.5" SATA 6Gb/s, 7200 RPM, 512MB Cache (WD221KFGX)

• WD Red Pro NAS hard drive with 22TB of capacity
• 7200 RPM spindle speed with 512MB cache
• Rotational vibration sensors for large, busy multi-bay RAID systems
• Rated for workloads of up to 550TB per year and up to 2.5 million hours MTBF
• Model: WD221KFGX | QNAP part number: 7211322T-7050200-000-RS

A 22TB WD Red Pro drive supplied by QNAP for high-intensity business NAS workloads.