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WD Caviar Green
-2-
Specifications
1
3 TB 3 TB 2.5 TB 2.5 TB 2 TB 2 TB
Model number WD30EZRX WD30EZRSDTL WD25EZRX WD25EZRSDTL WD20EARX WD20EARS
Interface SATA 6 Gb/s SATA 3 Gb/s SATA 6 Gb/s SATA 3 Gb/s SATA 6Gb/s SATA 3 Gb/s
Formatted capacity 3,000,592 MB 3,000,592 MB 2,500,495 MB 2,500,495 MB 2,000,398 MB 2,000,398 MB
User sectors per drive 5,860,533,168 5,860,533,168 4,883,781,168 4,883,781,168 3,907,029,168 3,907,029,168
Advanced Format (AF) Yes Yes Yes Yes Yes Yes
SATA latching connector Yes Yes Yes Yes Yes Yes
Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch
RoHS compliant
2
Yes Yes Yes Yes Yes Yes
Performance
Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)
6 Gb/s
123 MB/s
3 Gb/s
123 MB/s
6 Gb/s
123 MB/s
3 Gb/s
123 MB/s
6 Gb/s
110 MB/s
3 Gb/s
110 MB/s
Cache (MB) 64 64 64 64 64 64
Rotational speed (RPM) IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower
Reliability/Data Integrity
Load/unload cycles
3
300,000 300,000 300,000 300,000 300,000 300,000
Non-recoverable read errors
per bits read
<1 in 10
14
<1 in 10
14
<1 in 10
14
<1 in 10
14
<1 in 10
14
<1 in 10
14
Limited warranty (years)
4
333333
Power Management
12VDC (A, peak) 1.78 1.78 1.78 1.78 1.75 1.75
Average power requirements (W)
Read/write
Idle
Standby
Sleep
6
5.5
0.8
0.8
6
5.5
0.8
0.8
6
5.5
0.8
0.8
6
5.5
0.8
0.8
5.3
3.3
0.7
0.7
5.3
3.3
0.7
0.7
Environmental Specifications
5
Temperature (°C)
Operating
Non-operating
0 to 60
-40 to 70
0 to 60
-40 to 70
0 to 60
-40 to 70
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
30
65
250
30
65
250
30
65
250
Average acoustics (dBA)
6
Idle mode
Performance seek mode
Quiet seek mode
24
29
25
24
29
25
24
29
25
24
29
25
24
29
25
24
29
25
Physical Dimensions
Height (in./mm, max) 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4 1.028/25.4
Length (in./mm, max) 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147 5.787/147
Width (in./mm, ± .01 in.) 4/101.6 4/101.6 4/101.6 4/101.6 4/101.6 4/101.6
Weight (lb./kg, ± 10%) 1.61/0.73 1.61/0.73 1.61/0.73 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 European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the
European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.
3
Controlled unload at ambient condition
4
The term of the limited warranty may vary by region. Visit support.wdc.com/warranty for details.
5
No non-recoverable errors during operating tests or after non-operating tests.
6
Sound power level.