Western Digital - Red 4TB - WD40EFRX

Kapacitás	4 TB
Felhasználási mód	NAS
Csatlakozók	SATA 3
Cache	64 MB
Fordulatszám	IntelliPower

Ideal for:
Specifically designed and tested for small office and home office, 1-8 bay NAS systems and PCs with RAID.
For systems that use more than 8 bays, please consider WD Red Pro hard drives.

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

Performance Specifications
Target Performance
MTBF 1,000,000 hours

Physical Dimensions
English
Height 1.028 Inches
Depth 5.787 Inches
Width 4.00 Inches
Weight 1.50 Pounds

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 (English)
Operating 32° F to 158° F
Non-operating -40° F to 158° F

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/Linux

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