4TB WD 3.5" SATA 6Gb/s Red HDD PN WD40EFRX - Computer Alliance
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4TB WD 3.5" SATA 6Gb/s Red HDD PN WD40EFRX

Web ID: 11689

Specifically designed and tested for small office and home office, 1-8 bay NAS systems, small media servers and PCs with RAID.
Manufacturer PN: WD40EFRX
GTIN: 718037810058
Warranty: 3 Year
Manufacturer Website

$179SAVE $80

MVP of NAS

There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD Red offers a wide array of solutions for customers looking to build a high performing NAS storage solution. Built for single-bay to 8-bay NAS systems, WD Red packs the power to store your precious data in one powerhouse unit. With WD Red, you’re ready for what’s next.

The drive for NAS

Desktop drives aren’t typically tested or designed for the rigors of a NAS system. Do right by your NAS and choose the drive with an array of features to help preserve your data and maintain optimum performance.

Built for NAS Compatibility

WD Red drives with NASware 3.0 technology are purpose-built to balance performance and reliability in NAS and RAID environments.

Keep it Cool

The always-on environment of a NAS or RAID is a hot one. WD Red drives are engineered to run cool and quiet while offering optimum compatibility for demanding 24x7 environments.

 
 

A desktop hard drive is not typically tested or designed for a Network Attached Storage device or RAID environment. Choose a drive that has been tested in NAS environments with an array of features to preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS:

  • Compatibility: Without being tested for compatibility with your NAS system, optimum performance and reliability are not guaranteed.
  • Reliability: The always-on environment of a NAS or RAID can lead to increased tempratures, and desktop drives are not typically designed and tested in those conditions. WD Red drives are built for NAS.
  • Error recovery Controls: WD Red NAS hard drives are specifically designed with RAID error recovery control to help reduce fallouts with in the NAS system.  Desktop drives are not typically designed for RAID environments where this can be an issue.
  • Noise and Vibration Protection: Desktop drives are not typically tested or designed to account for the noise and vibration faced in a multi-drive system. WD Red drives are designed for multi-bay NAS systems with NASware technology to help prevent this.
 

WD RED FOR HOME

Stream, backup, organize and effortlessly share your digital content to your TV, PC and more. NASware technology increases your drives' compatibility with your NAS system, for better playback with your devices.

WD RED FOR SMALL BUSINESS

Businesses thrive on productivity and efficiency, two guiding principles built into the design of the WD Red drive. Share and backup files at the speed of your business with a WD Red drive in your NAS.

Designed for NAS

Desktop drives aren't purpose-built for NAS. But WD Red drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.

 

Product Specifications
Interface SATA 6 Gb/s

Performance Specifications
Rotational Speed IntelliPower *
Buffer Size 64 MB
Transfer Rates
Buffer To Host (Serial ATA) 6 Gb/s (Max)

Physical Specifications
Formatted Capacity 4,000,787 MB
Capacity 4 TB
User Sectors Per Drive 7,814,037,168

Performance Specifications
Target Performance
MTBF 1,000,000 hours

Physical Dimensions
English
Height 1.028 Inches
Depth 5.787 Inches
Width 4.00 Inches
Weight 1.50 Pounds
Metric
Height 26.1 mm
Depth 147 mm
Width 101.6 mm
Weight 0.68 kg

Environmental Specifications
Shock
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 250G, 2 ms
Acoustics
Idle Mode 25 dBA (average)
Seek Mode 0 28 dBA (average)
Temperature (English)
Operating 32° 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
Operating 5-95% RH non-condensing
Vibration
Operating 0.004 g²/Hz (10 to 300 Hz)
Non-operating 0.05 g²/Hz (10 to 300 Hz)
Operating
Linear 20-300 Hz, 0.75G (0 to peak)

Electrical Specifications
Current Requirements
12 VDC
Read/Write 250 mA
Idle 230 mA
Standby 7 mA
Sleep 7 mA
5 VDC
Read/Write 280 mA
Idle 260 mA
Standby 105 mA
Sleep 105 mA
Power Dissipation
Read/Write 4.50 Watts
Idle 3.30 Watts
Standby 0.40 Watts
Sleep 0.40 Watts

Compatibility
Operating System
Compatibility Windows/Mac