WD Red 4TB NAS 64MB 3.5" 5400RPM SATA3 6Gb/s 64MB Cache

WD Red 4TB NAS 64MB 3.5" 5400RPM SATA3 6Gb/s 64MB Cache

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WD Red 4 TB Hard Drive for NAS ( WD40EFRX) 
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 
User Sectors Per Drive 7,814,037,168 

Performance Specifications 
Target Performance 
MTBF 1,000,000 hours 

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

Environmental Specifications 
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) 

Electrical Specifications 
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 

Compatibility 
Operating System 
Compatibility Windows/Mac
GTIN: WD40EFRX

Shipping Details

  • Please allow 2 - 7 business days for delivery
  • We ship across Australia, including major cities like: Sydney, Melbourne, Perth, Brisbane, Adelaide, Canberra, Newcastle and the Gold Coast
  • No deliveries to PO Boxes
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