• Long-term Reliability  - These drives are designed to last in high temperature always-on streaming digital audio/video environments such as PVR/DVR, DVR recorders and surveillance video recorders.
• Quiet - Noise levels have been minimized to less than one sone* - virtually below the threshold of human hearing.
• Reduced Power Consumption - WD has reduced power consumption by up to 40 percent compared to competitors' drives with the combination of WD's IntelliSeek, IntelliPark, and IntelliPower technologies.
• Compatible - Tested for compatibility in a broad range of AV products including set top boxes, DVD recorders, and mainstream surveillance systems.
• SilkStream - Optimized for smooth, continuous digital video playback of up to twelve simultaneous HD streams. SilkStream is compatible with the ATA streaming command set so CE customers can use standard streaming management and error recovery options.
• IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration.
• IntelliPark - Delivers lower power consumption by automatically unloading the heads during idle to reduce aerodynamic drag.
• Preemptive Wear Leveling (PWL) - The drive arm frequently sweeps across the disk to reduce uneven wear on the drive surface common to audio video streaming applications.
• Advanced Format Technology (AF) - Technology being adopted by WD and other drive manufacturers as one of multiple ways to continue growing hard drive capacities. AF is a more efficient media format that enables increased areal densities. (EURS models only)

Specifications:

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Specifications
Product Code	WD20EURS
Details
Rotational Speed	IntelliPower
Buffer Size	64 MB
Transfer Rates
Buffer To Host (Serial ATA)	3 Gb/s (Max)
Physical Specifications
Formatted Capacity	2,000,398 MB
Capacity	2 TB
Interface	SATA 2
User Sectors Per Drive	3907029168
Physical Dimensions
Height	26.1 mm
Depth	147 mm
Width	101.6 mm
Weight	0.64 kg
Shock
Operating Shock (Read)	65G, 2 ms
Non-operating Shock	250G, 2 ms
Acoustics
Idle Mode	24 dBA (average)
Seek Mode 3	25 dBA (average)
Temperature (Metric)
Operating	-0° C to 60° C
Non-operating	-40° C to 70° C
Electrical Specifications
Read / Write	4.50 Watts
Idle	4.00 Watts
Standby	0.70 Watts
Sleep	0.70 Watts