™
WD RED
NAS Hard Drives
WD Red is designed specically for small NAS systems
that have 1 to 5 drive bays. The drives are designed and
extensively tested for compatibility in the unique 24x7
operating environment and for the demanding system
requirements of home and small ofce NAS.
INTERFACE
SATA 6 Gb/s
MODEL NUMBERS
WD40EFRX
WD30EFRX
WD20EFRX
WD10EFRX
Product Features
Expanded solutions
Our formula of success has led
growth of WD Red into higher
capacities and expansion into new
2.5-inch solutions. We now offer
a broader, more comprehensive
portfolio of NAS hard drives for our
customers. It is not just about NAS
drives, it is REDvolutionary™.
Next generation experience
Every component, line of code, and
product decision was built on our
passion and determination to deliver
the best NAS experience. The next
generation of WD Red hard drives
delivers on this promise with massive
capacity and NASware™ 2.0, which
further improves drive reliability and
protects your data in the event of a
power loss or disruption.
Exclusive NASware 2.0
technology
Our exclusive technology, NASware
2.0, makes WD Red thrive in the
demanding small-NAS environment.
By adding WD Red to your NAS
system, not only is everything more
efcient and reliable, you can better
protect your data investment.
WIDTH/HEIGHT
3.5-inch/1-inch
Experienced in NAS
In all of our cultures around the world,
rst impressions are what leave a
mark. With superior technology that
is driven to impress, WD Red is a
reection of the most extensive NAS
partner compatibility-testing list that is
available on the market.* That means
when you buy a NAS enclosure, you
can trust that WD Red will be the
most compatible drive available. Our
pride is in our product and our vision
is shared with our customers.
3D Active Balance™ Plus
Our enhanced dual-plane balance
control technology signicantly
improves the overall drive
performance and reliability. Hard
drives that are not properly balanced
may cause excessive vibration and
noise in a multi-drive system, reduce
the hard drive life span, and degrade
the performance over time.
The right choice
WD Red is designed specically for
home and small ofce NAS systems
and PCs with RAID.
*Data reects products in production as of August 2013.
ROTATIONAL SPEED
IntelliPower
Enhanced reliability
Since your NAS system is always
on, a highly reliable drive is essential.
With a 35% MTBF improvement over
standard drives, the WD Red drive
with NASware 2.0 is designed for the
24x7 environment.
NAS compatibility
Advanced rmware technology built
into every WD Red drive, NASware
2.0 enables seamless integration,
robust data protection and optimal
performance for systems operating in
NAS and RAID environments.
The secret is the next-generation
technology
WD’s next generation NASware
2.0 technology improves NAS
storage performance by reducing
common hard drive concerns in
NAS systems including concerns for
things like compatibility, integration,
upgrade ability, reliability and cost of
ownership that are experienced with
a hard drive designed for desktop
computers.
™
CAPACITIES
1 TB to 4 TB
Note: Not all products may be
available in all regions of the world.
Energy efcient and money
saving
We keep power consumption low
which keeps your NAS system happy
and your wallet, too.
Lower operating temperatures
Reduce your electricity bill with WD
Red drives. Innovative technology
reduces power consumption and
lowers the operating temperature,
resulting in a more reliable and
affordable solution for always on
NAS environments.
Longer warranty coverage
The WD Red drive is backed by a
3-year limited warranty for greater
peace of mind.
Need help? We offer premium
support
Every WD Red hard drive comes
with our world-class professional
support services including a premium
dedicated 24/7 support line (available
in English, other regional support
hours vary).*
* Support outside of normal business hours is available in English only
Go to http://support.wd.com for further details.
Applications
WD Red NAS hard drives are recommended for use in home and small ofce 1-5 bay NAS systems. For systems that use more than 5 bays or are rack mount
solutions, please consider WD Datacenter hard drives.*
* WD hard drives are designed and tested for use in specic applications and environments. This ensures that your hard drive is compatible with and functions properly in your
application. Our hard drives are warranted against defects in materials and workmanship in the system for which they were designed. Use in systems other than for what the hard drive
was designed could result in compatibility problems that affect proper function, unrelated to material and/or workmanship defects. For best results, be sure to select the appropriate
product for your application by consulting our product spec sheets on our website at www.wd.com or by calling our customer support line where we would be happy to help you
through the selection process.
WD RED
Specications 4 TB 3 TB 2 TB 1 TB
Model number WD40EFRX WD30EFRX WD20EFRX WD10EFRX
Interface SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Formatted capacity
Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch
Advanced Format (AF) Yes Yes Ye s Ye s
RoHS compliant
Performance
Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)
Cache (MB) 64 64 64 64
Rotational speed (RPM)
Reliability/Data Integrity
Load/unload cycles
Non-recoverable read errors per bits
read
MTBF (hours)
Limited warranty (years)
Power Management
12VDC ±10% (A, peak) 1.75 1.73 1.73 1.20
Average power requirements (W)
Read/Write
Idle
Standby/Sleep
Environmental Specications
Temperature (°C)
Operating
Non-operating
Shock (Gs)
Operating (2 ms, read/write)
Operating (2 ms, read)
Non-operating (2 ms)
Acoustics (dBA)
Idle
Seek (average)
Physical Dimensions
Height (in./mm) 1.028/26.1 1.028/26.1 1.028/26.1 1.028/26.1
Length (in./mm) 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
Weight (lb./kg, ± 10%) 1.50/0.68 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 3 Gb/s transfer rate calculated according to the Serial ATA specication published by the SATA-IO organization as of the date of this specication
sheet. Visit www.sata-io.org for details.
2
WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
3
A ne-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both signicant 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.wd.com/warranty for details.
7
No non-recoverable errors during operating tests or after non-operating tests.
8
On the base casting.
9
Sound power level.
1
2
3
4
4 TB 3 TB 2 TB 1 TB
Yes Ye s Ye s Ye s
6 Gb/s
150 MB/s
6 Gb/s
147 MB/s
6 Gb/s
147 MB/s
6 Gb/s
150 MB/s
IntelliPower IntelliPower IntelliPower IntelliPower
600,000 600,000 600,000 600,000
<1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014
5
6
8
9
1,000,000 1,000,000 1,000,000 1,000,000
3 3 3 3
4.5
3.3
0.4
7
0 to 70
-40 to 70
30
65
250
25
28
4.1
3.0
0.4
0 to 70
-40 to 70
30
65
250
23
27
4.1
3.0
0.4
0 to 70
-40 to 70
30
65
250
23
27
3.3
2.5
0.4
0 to 70
-40 to 70
30
65
350
21
24
™
Western Digital
3355 Michelson Drive, Suite 100
Irvine, California 92612
U.S.A.
Learn more about WD Red hard drives
WD Red is part of WD’s complete lineup of internal hard drives.
WD BLUE
Everyday Storage
™
For service and literature:
http://support.wd.com
www.wd.com
800.ASK.4WDC
(800.275.4932)
800.832.4778 Spanish
+800.6008.6008 Asia Pacic
00800.27549338 Europe
+31.880062100 Europe/Middle East/Africa
WD Red premium support
855.55.WDRED
(855.559.3733)
+800.55593733 Europe/Middle East/Africa/
WD GREEN
Cool & Quiet Storage
North America
(toll free where available)
North America
Asia Pacic
™
WD BLACK
Performance Storage
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, REDvolutionary,
3D Active Balance, and FIT Lab are trademarks of Western Digital Technologies, Inc.
in the U.S. and other countries. Other marks may be mentioned herein that belong to
other companies. Product specications subject to change without notice.
© 2013 Western Digital Technologies, Inc. All rights reserved.
™
WD RED
NAS Storage
Canada ICES-003 Class B / NMB-003 Classe B
2879-771442-A03 Aug 2013
™
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