Western Digital Red Pro WD181KFGX 18TB 7.2K RPM SATA 6Gb/s 512e 2025 Specifications Type: Enterprise Hard Drive Brand: Western Digital Series: Red Pro Model Number: WD181KFGX Part Number Form Factor: 3.5" Capacity: 18TB Interface: SATA 6Gb/s Spindle Speed: 7.2K RPM Tray Bare Drive Weight: 2lb Width: 4in Height: 1in Depth: 5.8in