Features:

The right choice!
No other drive is designed specifically for home and small office NAS systems.
    
Exclusive NASware technology
Our exclusive technology, NASware, makes WD Red thrive in the demanding small-NAS environment.
    
Energy efficient and money saving
We keep power consumption low which keeps your NAS system happy and your wallet, too.

NAS compatibility
NASware – Advanced firmware technology built into every WD Red drive, enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environments.

The secret is in the technology
WD’s exclusive NASware technology improves NAS storage performance by reducing common hard drive concerns in NAS systems including concerns for things like compatibility, integration, upgrade ability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers.
    
3D Active Balance Plus
Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multidrive system, reduce the hard drive life span, and degrade the performance over time.

Enhanced reliability
Your NAS systems is always on, a highly reliable drive is essential. With a 35% MTBF improvement over standard desktop drives, the WD Red drive is designed and manufactured to be a more reliable and robust solution.
    
Energy efficient
Reduce your electricity bill and carbon footprint with WD Red drives. Innovative technology reduces power consumption and lowers the operating temperature, resulting in a more reliable and affordable solution for always on 24x7 NAS environments.
    
Ideal for
Specifically designed and tested for small office and home office, 1-5 bay NAS systems. 

Specifications:

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Specifications for the product series
Product Code	WD10EFRX
Model
Brand	Western Digital
Series	Red
Model	WD10EFRX
Product Specifications
Interface	Serial ATA III
Performance Specifications
Rotational Speed	IntelliPower
Buffer Size	64 MB
Transfer Rates
Buffer To Host (Serial ATA)	6 Gb/s (Max)
Physical Specifications
Formatted Capacity	1, 000, 204 MB
Capacity	1 TB
User Sectors Per Drive	1, 953, 525, 168
Target Performance
MTBF	1, 000, 000 hours
Physical Dimensions
Height	26.1 mm
Depth	147 mm
Width	101.6 mm
Weight	0.45 kg
Shock
Operating Shock (Read)	65G, 2 ms
Non-operating Shock	350G, 2 ms
Acoustics
Idle Mode	21 dBA (average)
Seek Mode 0	22 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	190 mA
Idle	180 mA
Standby	7 mA
Sleep	7 mA
5 VDC
Read/Write	280 mA
Idle	215 mA
Standby	105 mA
Sleep	105 mA
Power Dissipation
Read/Write	3.70 Watts
Idle	3.20 Watts
Standby	0.60 Watts
Sleep	0.60 Watts