WD Red 4TB NAS Internal Hard Drive 

• Capacity: 4TB (Terabytes)
• Form Factor: 3.5 inches
• Interface: SATA 6.0Gb/s (SATA III)
• Rotational Speed: Typically 5400 RPM for lower capacities, 7200 RPM for higher capacities
• Cache Size: Varies, commonly 64MB or higher
• Usage: Specifically designed for Network Attached Storage (NAS) systems
• Compatibility: Optimized to work seamlessly with NAS systems, suitable for 24/7 operation
• NASware Technology: WD's technology for optimized performance, reliability, and compatibility within NAS environments
• Reliability Features: Built for reliability, error handling, and vibration resistance in multi-bay NAS configurations
• Brand: Western Digital (WD)