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Western Digital Caviar Green 2TB WDBAAY0020HNC-ERSN User Manual

Product codes
WDBAAY0020HNC-ERSN
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WD Caviar Green
-2-
Specifications
3 TB
2.5 TB
2 TB
2 TB
1.5 TB
1.5 TB
1 TB
Model number
WD30EZRSDTL
WD25EZRSDTL
WD20EARS
WD20EADS
WD15EARS
WD15EADS
WD10EADS
Interface
SATA 3 Gb/s
SATA 3 Gb/s
SATA 3 Gb/s
SATA 3 Gb/s
SATA 3 Gb/s
SATA 3 Gb/s
SATA 3 Gb/s
Formatted capacity
3,000,592 MB
2,500,495 MB
2,000,398 MB
2,000,398 MB
1,500,301 MB
1,500,301 MB
1,000,204 MB
User sectors per drive
5,860,533,168
4,883,781,168
3,907,029,168
3,907,029,168
2,930,277,168
2,930,277,168
1,953,525,168
Advanced Format (AF)
Yes
Yes
Yes
No
Yes
No
No
SATA latching connector
Yes
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
3.5-inch
RoHS compliant
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Performance
Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
3 Gb/s
110 MB/s
Cache (MB)
64
64
64
32
64
32
32
Rotational speed (RPM)
IntelliPower
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
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
 
<1 in 10
14
 
Limited warranty (years)
4
3
3
3
3
3
3
3
Power Management
12VDC (A, peak)
1.75
1.75
1.55
1.75
1.55
1.75
1.464
Average power requirements (W)
Read/write 
Idle
Standby
Sleep
6.3
5.5
1.0
0.8
6
5.5
0.8
0.8
4.5
2.5
0.7
0.7
6
3.7
0.8
0.8
4.5
2.5
0.7
0.7
6
3.7
0.8
0.8
4.9
2.8
0.4
0.4
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
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
30
65
300
Average acoustics (dBA)
6
Idle mode
Performance seek mode
Quiet seek mode
24
25
25
24
29
25
24
29
25
24
29
25
24
29
25
24
29
25
23
27
24
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
Length (in./mm, max)
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
Weight (lb./kg, ± 10%)
1.61/0.73
1.61/0.73
1.61/0.73
1.61/0.73
1.32/0.60
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.