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WD Red NAS Hard Drive WD40EFAX - Hard drive - 4 TB - internal - 3.5-inch - SATA 6Gb/s - 5400 rpm - buffer: 256 MB

Estimated Value
$121.99
Dell Price $79.99
You Save $42.00 (34%)
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Manufacturer part WD40EFAX | Dell part AB133745 | Order Code ab133745 | Western Digital
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WD Red 4TB

There’s a leading edge WD Red™ NAS hard drive for every compatible NAS system to store your precious data. With drives up to 6TB, WD Red™ offers a wide array of storage for customers looking to build a NAS solution. Built and tested for personal and home NAS systems with up to 8-bays, these drives pack all the punch you need in one powerhouse unit for storing, archiving, and sharing. With WD Red™, you’re ready for what’s next.
WD Red 4TB

Media

WD Red for Personal or Home Office

Stream, backup, share, and organize your digital content at home with a NAS and WD Red NAS hard drives designed to effortlessly share content with the devices in your personal or home office environments. NASware 3.0 technology increases your drives’ compatibility with your existing network and devices, TV, stereo, and more. Live in a connected world.

Exclusive NASware 3.0

Not just any drive will do. Get up to 48TB of capacity in your 8-bay system and with WD’s exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red NAS hard drive, NASware 3.0’s advanced technology improves your system’s storage performance by increasing compatibility, integration, upgradeability, and reliability.

Built for Optimum NAS Compatibility

Designed for personal and home office NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. WD Red drives are optimized for environments where idle time is available to perform necessary background operations. To ensure optimal performance, always check compatibility with your system. WD Red drives may not be suitable for higher workload environments. For ZFS file systems and overall NAS system compatibility, we highly recommend WD Red Plus drives, which are optimized for higher workloads.1

24/7 Environment

Since your NAS system is always on, a reliable drive is essential. With an MTBF of up to 1 million hours, the WD Red drive is engineered to tackle 24x7 environments.

Premium Support and a 3-year Limited Warranty

Confidently upgrade your NAS performance with the assurance of a 3-year limited warranty, coupled with world-class support services included with every WD Red drive.

Desktop Drives vs. WD Red

Do right by your NAS and choose the drive purpose-built for NAS with an array of features to help preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS: ● Compatibility: Unlike desktop drives, these drives are tested for compatibility and optimum performance. ● Reliability: The always-on environment of a NAS or RAID is a hot one, and desktop drives aren’t typically designed and tested under those conditions like WD Red is. ● Error recovery controls: WD Red NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system. ● Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red drives are designed to thrive in multi-bay NAS system environments.

General
Capacity 4 TB
Cache Size 256 MB
Form Factor 3.5 in
compatibility Designed with SMR technology for workloads associated with personal and home office, such as storing, archiving and sharing, in RAID-optimized NAS systems with up to 8 bays.
Dimension 5.79" x 4" x 1.03"
Product Weight 1.26lbs
Interface SATA
Transfer Rate up to 180MB/s

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

12TB, 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.

Tech Specs


General
Device Type
Hard drive - internal
Capacity
4 TB
Form Factor
3.5"
Interface
SATA 6Gb/s
Buffer Size
256 MB
Features
Native Command Queuing (NCQ), Advanced Format technology, NAS compatible, NASware technology, 24x7 availability
Width
4 in
Depth
5.8 in
Height
1 in
Weight
20.1 oz

Performance
Drive Transfer Rate
600 MBps (external)
Internal Data Rate
150 MBps
Spindle Speed
5400 rpm

Reliability
MTBF
1,000,000 hours
24x7 Operation
Yes
Non-Recoverable Errors
1 per 10^14
Load / Unload Cycles
600,000

Expansion & Connectivity
Interfaces
1 x SATA 6 Gb/s
Compatible Bay
3.5"

Power
Power Consumption
  • 4.5 Watt (read)
  • 4.5 Watt (write)
  • 3.3 Watt (idle)
  • 0.4 Watt (sleep)
  • 0.4 Watt (standby)

Miscellaneous
Compliant Standards
RoHS 2011/65/EU

Manufacturer Warranty
Service & Support
Limited warranty - 3 years

Environmental Parameters
Min Operating Temperature
32 °F
Max Operating Temperature
149 °F
Min Storage Temperature
-40 °F
Max Storage Temperature
158 °F
Shock Tolerance (operating)
30 g @ 2 ms
Shock Tolerance (non-operating)
250 g @ 2 ms


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