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WD GREEN
™
-2-
Specications 3 TB 2 TB 2 TB
Model number WD30EZRX WD20EARX WD20EZRX
Interface SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Formatted capacity
1
3,000,592 MB 2,000,398 MB 2,000,398 MB
User sectors per drive 5,860,533,168 3,907,029,168 3,907,029,168
Form factor 3.5-inch 3.5-inch 3.5-inch
Advanced Format (AF) Yes Yes Yes
RoHS compliant
2
Yes Yes Yes
Performance
Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)
6 Gb/s
145 MB/s
6 Gb/s
110 MB/s
6 Gb/s
145 MB/
Cache (MB) 64 64 64
Rotational speed (RPM)
3
IntelliPower IntelliPower IntelliPower
Reliability/Data Integrity
Load/unload cycles
4
300,000 300,000 300,000
Non-recoverable read errors per bits
read
<1 in 10
14
<1 in 10
14
<1 in 10
14
Limited warranty (years)
5
2 2 2
Power Management
5VDC ±10% (A, peak) 1.78 1.75 1.78
Average power requirements (W)
Read/Write
Idle
Standby/Sleep
6
5.5
0.8
5.3
3.3
0.7
6
5.5
0.8
Environmental Specications
6
Temperature (°C)
Operating
Non-operating
0 to 60
-40 to 70
0 to 60
-40 to 70
0 to 60
-40 to 70
Shock (Gs)
Operating (2 ms, read)
Operating (2 ms, read/write)
Non-operating (1 ms)
30
65
250
30
65
250
30
65
250
Average acoustics (dBA)
7
Idle
Performance seek mode
Quiet seek mode
24
29
25
24
29
25
24
29
25
Physical Dimensions
Height (in./mm, max) 1.028/26.1 1.028/26.1 1.028/26.1
Length (in./mm, max) 5.787/147 5.787/147 5.787/147
Width (in./mm, ± .01 in.) 4/101.6 4/101.6 4/101.6
Weight (lb./kg, ± 10%) 1.61/0.73 1.40/0.64 1.40/0.64
1
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer
rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specication published by the SATA-IO organization as of the date of this specication
sheet. Visit www.sata-io.org for details.
2
WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
3
A ne-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both signicant power savings and solid performance. For each WD Green drive model, WD may use a different, invariable RPM.
4
Controlled unload at ambient condition.
5
The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details.
6
No non-recoverable errors during operating tests or after non-operating tests.
7
Sound power level.