Western Digital Caviar Green 2TB WD20EADS 产品宣传页
产品代码
WD20EADS
WD Caviar Gr
een
WD Caviar Green
Power-saving Hard Drives
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.
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.
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.
For service and literature:
Western Digital, WD, the WD logo, and WD Caviar
are registered trademarks in the U.S. and other
countries; and Green, IntelliSeek, IntelliPower,
NoTouch, GreenPower, and FIT Lab are trademarks of
Western Digital Technologies, Inc. Other marks may
be mentioned herein that belong to other companies.
Product specifications subject to change without
notice.
are registered trademarks in the U.S. and other
countries; and Green, IntelliSeek, IntelliPower,
NoTouch, GreenPower, and FIT Lab are trademarks of
Western Digital Technologies, Inc. Other marks may
be mentioned herein that belong to other companies.
Product specifications subject to change without
notice.
© 2009 Western Digital Technologies, Inc.
All rights reserved.
All rights reserved.
Western Digital
20511 Lake Forest Drive
Lake Forest, California U.S.A. 92630
20511 Lake Forest Drive
Lake Forest, California U.S.A. 92630
2879-701229-A05 Jan 2009
800.
ASK
.4
WDC
North America
800.832.4778
Spanish
+800.6008.6008 Asia Pacific
00800.27549338 Europe
00800.27549338 Europe
(toll free where available)
+31.880062100
Europe/Middle East/Africa
Specifications
1
2 TB
1.5 TB
1 TB
750 GB
640 GB
500 GB
Model number
WD20EADS
WD15EADS
WD10EADS
WD10EAVS
WD10EAVS
WD7500AACS
WD7500AAVS
WD7500AAVS
WD6400AACS
WD6400AAVS
WD6400AAVS
WD5000AACS
WD5000AAVS
WD5000AAVS
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
Formatted capacity
2,000,398 MB 1,500,301 MB 1,000,204 MB
750,156 MB
640,135 MB
500,107 MB
User sectors per drive
3,907,029,168 2,930,277,168 1,953,525,169
1,465,149,168
1,250,263,728
976,773,168
LBA support
Yes
Yes
Yes
Yes
Yes
Yes
SATA latching connector
Yes
Yes
Yes
Yes
Yes
Yes
Actuator latch/auto park
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)
Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)
Host to/from drive (sustained)
3 Gb/s
100 MB/s
100 MB/s
3 Gb/s
100 MB/s
100 MB/s
3 Gb/s
111 MB/s
111 MB/s
3 Gb/s
111 MB/s
111 MB/s
3 Gb/s
108 MB/s
108 MB/s
3 Gb/s
108 MB/s
108 MB/s
Cache (MB)
32
32
32 (WD10EADS)
8 (WD10EAVS)
8 (WD10EAVS)
16 (WD7500AACS)
8 (WD7500AAVS)
8 (WD7500AAVS)
16 (WD6400AACS)
8 (WD6400AAVS)
8 (WD6400AAVS)
16 (WD6400AACS)
8 (WD6400AAVS)
8 (WD6400AAVS)
Rotational speed (RPM)
IntelliPower
IntelliPower
IntelliPower
IntelliPower
IntelliPower
IntelliPower
Average drive ready time (sec)
14.5
14.5
14.3
14.3
14.3
14.3
Reliability/Data Integrity
Load/unload cycles
Load/unload cycles
3
300,000
300,000
300,000
300,000
300,000
300,000
Non-recoverable read errors
per bits read
per bits read
<1 in 10
15
<1 in 10
15
<1
in
10
15
<1
in
10
15
<1
in
10
15
<1
in
10
15
Limited warranty (years)
4
3
3
3
3
3
3
Power Management
12VDC (A, peak)
12VDC (A, peak)
1.775
1.775
1.671
1.671
1.392
1.392
Average power requirements (W)
Read/Write
Idle
Standby
Sleep
Idle
Standby
Sleep
7.4
3.9
1.1
1.1
3.9
1.1
1.1
7.4
3.9
1.1
1.1
3.9
1.1
1.1
5.4
2.8
0.4
0.4
2.8
0.4
0.4
5.4
2.8
0.4
0.4
2.8
0.4
0.4
5.4
2.5
0.46
0.46
2.5
0.46
0.46
5.4
2.5
0.46
0.46
2.5
0.46
0.46
Environmental Specifications
5
Temperature (°C)
Operating
Non-operating
Non-operating
0 to 60
-40 to 70
-40 to 70
0 to 60
-40 to 70
-40 to 70
5 to 55
-40 to 70
-40 to 70
5 to 55
-40 to 70
-40 to 70
5 to 55
-40 to 70
-40 to 70
5 to 55
-40 to 70
-40 to 70
Shock (Gs)
Operating (2 ms, read)
Operating (2 ms, read/write)
Non-operating (1 ms)
Operating (2 ms, read/write)
Non-operating (1 ms)
30
65
250
65
250
30
65
250
65
250
30
65
250
65
250
30
65
250
65
250
30
65
300
65
300
30
65
300
65
300
Average acoustics (dBA)
6
Idle mode
Performance seek mode
Quiet seek mode
Performance seek mode
Quiet seek mode
24
29
25
29
25
24
29
25
29
25
24
29
25
29
25
24
29
25
29
25
24
29
25
29
25
24
29
25
29
25
Physical Dimensions
Height (in./mm, max)
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
1.39/0.63
1.39/0.63
1.32/0.60
1.32/0.60