WD GREEN
™
-2-
Specifications
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 Specifications
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 specification published by the SATA-IO organization as of the date of this specification
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 fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant 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.
