Western Digital Red Plus 4TB 5400rpm 3.5 Inch 64MB Cache SATA3 NAS Hard Drive

Overview:

WD Red hard drives are designed specifically for NAS systems that have1 to 5 bays. The drives are designed
and extensively tested for compatibility in the unique 24x7 demanding system requirements of home and small office NAS.

Specifications:

Product Specifications
• Interface: SATA 6 Gb/s

Performance Specifications
• Rotational Speed: IntelliPower *
• Buffer Size: 64 MB

Transfer Rates
• Buffer To Host (Serial ATA): 6 Gb/s (Max)

Physical Specifications
• Formatted Capacity: 4,000,787 MB
• Capacity: 4 TB
• Form Factor: 3.5 Inch
• User Sectors Per Drive: 7,814,037,168

Target Performance
• MTBF: 1,000,000 hours

Physical Dimensions
• Height: 26.1 mm
• Depth: 147 mm
• Width: 101.6 mm
• Weight: 0.68 kg

Shock
• Operating Shock (Read): 65G, 2 ms
• Non-operating Shock: 250G, 2 ms

Acoustics
• Idle Mode: 25 dBA (average)
• Seek Mode 0: 28 dBA (average)

Temperature (Metric)
• Operating: -0° C to 70° C
• Non-operating: -40° C to 70° C

Humidity
• Operating: 5-95% RH non-condensing

Vibration
• Operating: 0.004 g²/Hz (10 to 300 Hz)
• Non-operating: 0.05 g²/Hz (10 to 300 Hz)
• Operating
• Linear: 20-300 Hz, 0.75G (0 to peak)

Current Requirements
12 VDC
• Read/Write: 250 mA
• Idle: 230 mA
• Standby: 7 mA
• Sleep: 7 mA
5 VDC
• Read/Write: 280 mA
• Idle: 260 mA
• Standby: 105 mA
• Sleep: 105 mA

Power Dissipation
• Read/Write: 4.50 Watts
• Idle: 3.30 Watts
• Standby: 0.40 Watts
• Sleep: 0.40 Watts