Shopping Cart

 /0  Items: $ 0.00 / 

WD Red
NAS Hard Drives


Designed and tested for RAID environments.



Share |

Model: WD40EFRX
WD Red is the only hard drive for NAS systems that have 1-5 drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and demanding system requirements of home and small office NAS.
$199.99



Highlights

The right choice!

No other drive is designed specifically for home and small office NAS systems and PCs with RAID.

Exclusive NASware technology.

Our exclusive technology, NASware™, makes WD Red thrive in the demanding small-NAS environment.

Energy efficient and money saving.

We keep power consumption low which keeps your NAS system happy and your wallet, too.



Overview

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 power disruption.

Experienced in NAS

In all of our cultures around the world, first impressions are what leave a mark. With superior technology that is driven to impress, WD Red is a reflection 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.

*Data reflects products in production as of August 2013.





NAS for home

Take your connected home environment to the next level with a NAS system that is equipped with WD Red hard drives and enjoy streaming your media, backing up your computers, file sharing and managing your digital content faster and easier.

WD Red's NASware 2.0 experience with increased compatibility makes sharing from your mobile device, computer, TV, stereo and more an instant gratification. And with capacities now available in 4 TB, a 5-bay NAS system can hold close to 20 terabytes of data!


NAS for small business

Increase the efficiency and productivity of your small business with WD Red hard drives for your 1 to 5 bay NAS system. WD Red comes equipped with NASware 2.0, which increases system compatibility allowing for seamless integration with your existing network infrastructure. Add value to your business by enabling your employees to quickly share their files and back up folders reliably with WD Red NAS hard drives in your NAS solution.

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 efficient and reliable, you get to enjoy a REDvolutionary NAS experience.

3D Active Balance Plus

Our enhanced dual-plane balance control technology significantly 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

The right choice for NAS, no other drive is designed specifically for home and small office NAS systems and PCs with RAID.

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 with NASware 2.0 is designed and manufactured to be a more reliable and robust solution.

NAS compatibility

Advanced firmware 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. This includes concerns for things like compatibility, integration, upgrade ability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers.

Longer warranty coverage

WD Red hard drives are backed by a 3-year limited warranty for greater peace of mind.

Energy efficient 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 and carbon footprint 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 24x7 NAS environments.

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 and a 3-year limited warranty.

Learn more

Ideal for:

Specifically designed and tested for small office and home office, 1-5 bay NAS systems, small media servers and PCs with RAID.

Click here for a list of tested systems


Reviews
Specifications
Product Specifications
InterfaceSATA 6 Gb/s
Performance Specifications
Rotational SpeedIntelliPower *
Buffer Size64 MB
Transfer Rates
Buffer To Host (Serial ATA)6 Gb/s (Max)
Physical Specifications
Formatted Capacity4,000,787 MB
Capacity4 TB
User Sectors Per Drive7,814,037,168
Performance Specifications
Target Performance
MTBF1,000,000 hours
Physical Dimensions
English
Height1.028 Inches
Depth5.787 Inches
Width4.00 Inches
Weight1.50 Pounds
Metric
Height26.1 mm
Depth147 mm
Width101.6 mm
Weight0.68 kg
Environmental Specifications
Shock
Operating Shock (Read)65G, 2 ms
Non-operating Shock250G, 2 ms
Acoustics
Idle Mode25 dBA (average)
Seek Mode 028 dBA (average)
Temperature (English)
Operating32° F to 158° F
Non-operating-40° F to 158° F
Temperature (Metric)
Operating-0° C to 70° C
Non-operating-40° C to 70° C
Humidity
Operating5-95% RH non-condensing
Vibration
Operating0.004 g²/Hz (10 to 300 Hz)
Non-operating0.05 g²/Hz (10 to 300 Hz)
Operating
Linear20-300 Hz, 0.75G (0 to peak)
Electrical Specifications
Current Requirements
12 VDC
Read/Write250 mA
Idle230 mA
Standby7 mA
Sleep7 mA
5 VDC
Read/Write280 mA
Idle260 mA
Standby105 mA
Sleep105 mA
Power Dissipation
Read/Write4.50 Watts
Idle3.30 Watts
Standby0.40 Watts
Sleep0.40 Watts
Compatibility
Operating System
CompatibilityWindows/Mac


Services

WD Red Premium Support line provides free tech support, toll free numbers 24x7 in English. Additional + regional support is also available and varies by region.

NASware 2.0

Next generation 2.0 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 power disruption.

WD's exclusive NASware technology, built into every WD Red hard drive.

WD's exclusive NASware 2.0 technology, which is built into every WD Red hard drive, improves NAS storage performance by reducing common hard drive concerns in NAS systems. They include concerns for things like compatibility, integration, upgradeability, reliability and cost-of-ownership that are experienced with a hard drive designed for desktop computers.


Desktop hard drives are designed for desktop computers.
WD Red is for NAS.

Desktop hard drives are designed for optimum performance and reliability in a desktop personal computer. Although they are an affordable alternative to enterprise-class drives, desktop drives have a higher level of risk for potential data loss and failure in an always-on RAID configured NAS system. Specific issues that you may experience using desktop drives in a NAS or RAID environment include:
  • Compatibility - Desktop hard drives are not always tested for compatibility in NAS and can present problems during integration.
  • Reliability - Most desktop drives are not designed for the high operating temperatures or always on, 24x7 operating environments making them less reliable when used in a NAS system.
  • Error recovery controls - Desktop drives are not traditionally designed for RAID environments and have controls that prevent the RAID controller from assisting in the event of an error which can cause the hard drive to drop off the RAID after a period of time. Rebuilding a RAID often requires several hours and can have a significant impact on downtime and productivity.
  • Noise and vibration - Typically designed for single drive applications, average desktop drives are not optimized for multi-drive systems which have higher noise and vibration levels. When these drives are added to a NAS, the additional vibration can reduce the reliability and life span of the drive.




Save power and money

NASware 2.0 further improves drive reliability and protects your data in the event of a power loss or power disruption. WD Red's optimized power usage results in significant power savings and lower hard drive operating temperatures within a small NAS environment, improving the overall reliability and performance of the drive and reduces the NAS cost of ownership.

Beyond the Desktop with
NASware 2.0

WD Red drives include WD's exclusive NASware 2.0 technology that addresses many of the challenges a traditional desktop hard drive has in a NAS system. WD works directly with our partners to test compatibility and reduce our customer's guess work as to which drive is right for their NAS system. Designed to deliver a better customer experience in small NAS systems, this innovative firmware finely balances the most important attributes of performance, power, and reliability in multiple drive environments. The unique algorithms in NASware 2.0 optimize power and performance without compromising on the attributes that NAS-system owner's value.

Intelligent error recovery

With built in intelligent error recovery controls, NASware 2.0 also prevents hard drives from being dropped off the RAID due to extended error recovery. This feature provides more availability and less down time when rebuilding the RAID.

Command completion

To further improve reliability, NASware 2.0 minimizes the data corruption or loss in the event of an unexpected power loss by completing the command in process before shutting down.

Important features for system integrators

In addition to features that make WD Red drives perfect for populating or upgrading NAS systems, NASware 2.0 brings features that system integrators need when building specialized NAS systems.
  • Streaming Support - NASware 2.0 provides built-in compatibility with the ATA Streaming Feature Set, which is important for AV storage applications such as Windows Media Center.
  • SMART Command Transport (SCT) support - NASware 2.0 allows monitoring and measuring of drive performance via the SMART command set. SMART can return data like thermal profiles, drive access statistics and more. NASware 2.0 also delivers temperature accuracy within 1°C.
  • Power Management Support - Enables optimized power usage within the NAS system and protects your data in the event of a power loss or disruption.
  • Best In Class Performance Performance - Optimized seek to provide Best In Class Performance performance while reducing the power and acoustics.


*Receive free standard shipping (UPS Ground) on purchases over $100 (excluding tax and shipping charges) at the WD Store. Offer not valid for addresses in Hawaii or Alaska. The WD Store reserves the right to change or discontinue this offer at any time.