WD WD20EFRX Product Data Sheet
™
WD Red
NAS Storage
The next generation of
NAS hard drives for home
or small ofce network
attached storage systems.
Expanded solutions
Next-generation experience
Experienced in NAS
The original color of NAS, our formula of
success has led to the 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 solutions for our customers. It is not just
about NAS drives, it is REDvolutionary.
™
Learn more
about WD Red
wd.com/red
WD Red
NAS Hard Drives
Product Features
Expanded Solutions
Our formula of success has
led to the growth of WD Red
into higher capacities and into
new 2.5-inch 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.
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 compatibilitytesting list 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.
*Data reects products in production
as of Augus t 2013.
Enhanced Reliability
Since your NAS system is
always on, a highly reliable
drive is essential. With a 35%
MTBF improvement over
standard desktop drives, the
WD Red drive designed for the
24x7 environment.
™
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. (EFRX models only)
Exclusive NASware 2.0
Technology
Our exclusive technology,
NASware 2.0, makes WD Red
thrive in the demanding smallNAS environment. By adding
WD Red to your NAS system,
not only is everything more
efcient and reliable, you
can better protect your data
investment.
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
WD Red hard drives are
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).
Product Specications
INTERFACE FORM FACTOR SPIN SPEED CACHE
SATA 6 Gb/s 3.5-inch (EFRX)
MODELS CAPACITIES LIMITED WARRANTY
3.5-inch
WD10EFRX
WD20EFRX
WD30EFRX
WD40EFRX
Western Digital, WD and the WD logo are registered trademarks in the U.S. and other countries; absolutely, WD Red, NASware, 3D Active Balance and REDvolutionary 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.
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 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.
2178-800014-A00 Aug 2013
2.5-inch
WD7500BFCX
WD10JFCX
WD Blue
Everyday Storage
™
2.5-inch (BFCX and JFCX)
750 GB
1 TB
2 TB
3 TB
4 TB
WD Red is part of WD’s complete lineup of internal hard drives.
™
WD Green
Cool & Quiet Storage
IntelliPower
3 years
™
WD Black
Performance Storage
64 MB (EFRX)
16 MB (BFCX and JFCX)
™
WD Red
NAS Storage
™
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