Internal HDD Western Digital Caviar Blue 3,5" 1TB SATA (6Gb/s) 64MB Cache Interface SATA: 6 Gb/s • Rotational Speed: 7,200 RPM (nominal) • Buffer Size: 64 MB • Average Latency: 5.50 ms (nominal) • Formatted Capacity: 1,000,204 MB • Capacity: 1TB • Form Factor: 3.5 Inch • User Sectors Per Drive: 1,953,525,169 • Height: 26.1 mm Depth: 147 mm Width: 101.6 mm Weight: 0.44 kg • Warranty: 2 year limited

There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD Red offers a wide array of solutions for customers looking to build a high performing NAS storage solution. ...

Internal HDD Western Digital Blue 2TB 64M 5400 RPM 3.5'' Interface SATA: 6 Gb/s • Rotational Speed: 5,400 RPM (nominal) • Buffer Size: - • Average Latency: - • Formatted Capacity: 2TB • Capacity: 2TB • Form Factor: 3.5 Inch • User Sectors Per Drive: - • Height: 26.1 mm Depth: - Width: 101.6 mm Weight: 0.60 kg • Warranty: 2 years limited

WD Red 2TB NAS Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20EFRX

WD Black My Passport External 4TB USB 3.0 Interface: USB 3.0 and USB 2.0 • Capacity: 4TB • Format: 2.5'' • Serial Bus Transfer Rate (USB 3.0): 5 Gb/s (Max) • Compatibility: Windows/Mac • Height: 21.50 mm Depth: 81.50 mm Width: 110.00 mm Weight: 0.25 kg • Warranty: 2 year limited