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WD Red
™
Western Digital, WD, and the WD logo are registered trademarks in the U.S. and other countries; and
WD Blue, WD Green, WD Black, WD Red, NASware, 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.
© 2012 Western Digital Technologies, Inc. All rights reserved.
Western Digital
3355 Michelson Drive, Suite 100
Irvine, California 92612
U.S.A.
2879-771442-A02 Aug 2012
For service and literature:
http://support.wdc.com
www.wd.com
WD Red premium support
800.ASK.4WDC
(800.275.4932)
North America
800.832.4778 Spanish
+800.6008.6008 Asia Pacific
00800.27549338 Europe
(toll free where available)
+31.880062100 Europe/Middle East/Africa
855.55.WDRED
(855.559.3733)
North America
+800.55593733 Europe/Middle East/Africa
Asia Pacific
Canada ICES-003 Class B / NMB-003 Classe B
Specifications
1
3 TB 2 TB 1 TB
Model number WD30EFRX WD20EFRX WD10EFRX
Interface SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Formatted capacity 3,000,592 MB 2,000,398 MB 1,000,204 MB
User sectors per drive 5,860,533,168 3,907,029,168 1,953,525,168
Advanced Format (AF) Yes Yes Yes
SATA latching connector Yes Yes Yes
Form factor 3.5-inch 3.5-inch 3.5-inch
RoHS compliant
2
Yes Yes Yes
Performance
Data transfer rate
Buffer to host (max)
Host to/from drive (typical)
6 Gb/s
145 MB/s
6 Gb/s
145 MB/s
6 Gb/s
150 MB/s
Cache (MB) 64 64 64
Rotational speed (RPM)
3
IntelliPower IntelliPower IntelliPower
Reliability/Data Integrity
Load/unload cycles
4
600,000 600,000 600,000
Non-recoverable read errors
per bits read
<1 in 10
14
<1 in 10
14
<1 in 10
14
MTBF (hours)
5
1,000,000 1,000,000 1,000,000
Limited warranty (years)
6
333
Power Management
12VDC (A, peak) 1.73 1.73 1.20
Average power requirements (W)
Read/write
Idle
Standby
Sleep
4.4
4.1
0.6
0.6
4.4
4.1
0.6
0.6
3.7
3.2
0.6
0.6
Environmental Specifications
7
Temperature (°C, on the base casting)
Operating
Non-operating
0 to 70
-40 to 70
0 to 70
-40 to 70
0 to 70
-40 to 70
Shock (Gs)
Operating (2 ms, read/write)
Operating (2 ms, read)
Non-operating (1 ms)
30
65
250
30
65
250
30
65
350
Average acoustics (dBA)
8
Idle mode
Seek mode
23
24
23
24
21
22
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%) 1.40/0.64 1.32/0.60 0.99/0.45
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 6 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 drive model, WD may use a different, invariable RPM.
4
Controlled unload at ambient condition.
5
Based on a typical NAS product environment under normal operating conditions.
6
The term of the limited warranty may vary by region. Visit http://support.wdc.com/warranty for details.
7
No non-recoverable errors during operating tests or after non-operating tests.
8
Sound power level.
WD Blue
™
Desktop Hard Drives
for everyday computing.
WD Green
™
Desktop Hard Drives
for energy efficient applications.
WD Black
™
Desktop Hard Drives
.for performance users
WD Red
™
NAS Hard Drives
for home and small office NAS systems.
WD Red is part of WD’s complete lineup of internal hard drives.
Learn more about WD Red hard drives