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WD Red Plus 4TB NAS hard drive front label with Western Digital logo
WD Red Plus 4TB NAS hard drive front label with Western Digital logo
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Western Digital Red Plus WD40EFZZ 4TB 5400RPM 128MB 3.5" SATA Hard Drive

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$259.99 exc. VAT Note: VAT will be charged for UK & EU Countries at checkout. For Zero VAT (for EU buyers), please provide a VAT number at checkout.

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Dispatch Time: Next Working Day Dispatch timelines are estimates and may vary due to unforeseen delays of 1-2 working days for small orders. Larger quantities may require additional processing time.

Product Code: UDHO-4172

MPN #: WD40EFZZ

Product Condition: New

Running out of reliable storage for your NAS can cause downtime and data loss, leaving your business vulnerable. The Western Digital Red Plus WD40EFZZ 4TB 5400RPM 128MB 3.5" SATA Hard Drive is a purpose-built Hard Drive that delivers steady performance and 24 × 7 reliability for small-to-medium NAS environments, keeping your files safe and accessible.

Why Choose a Western Digital Hard Drive

With this Hard Drive you experience quiet, low-power operation that never compromises on capacity. It fits seamlessly into most 3.5" bays and works smoothly with RAID-optimised systems, so you can focus on growing your data without worrying about compatibility or overheating.

Benefits of Western Digital Hard Drive
  • Consistent uptime: Designed for continuous 24 × 7 operation, reducing the risk of unexpected failures.
  • Lower energy costs: Uses less power than previous models, helping you save on electricity bills.
  • Quiet performance: Operates at 27 dBA, keeping your workspace or server room noise-free.
  • Vibration protection: Dual-plane balance control minimises vibration, extending drive life.
  • Hassle-free support: Backed by a 3-year limited warranty and world-class customer service.

Key Features of a 4TB Hard Drive
  • Capacity: 4 TB. Provides ample space for growing business data and media libraries.
  • Spindle Speed: 5400 rpm. Balances speed and power efficiency for steady NAS performance.
  • Buffer Size: 128 MB. Helps smooth data transfers and improves overall responsiveness.
  • Interface: SATA 6 Gb/s. Ensures fast connectivity with modern NAS and server hardware.
  • Form Factor: 3.5". Fits standard desktop-class NAS bays without modification.
  • MTBF: 1,000,000 hours. Indicates a very long expected lifespan under normal use.
  • Power Consumption: 4.5 W read/write, 2.9 W idle, 0.3 W sleep. Keeps operating costs low.
  • Temperature Range: 32 °F - 149 °F operating, -40 °F - 158 °F storage. Suitable for varied environments.
  • Shock Tolerance: 250 g non-operating, 70 g operating. Resilient to movement during handling.
  • NASware™: Optimises drive parameters for NAS workloads, enhancing reliability and performance.

Usages of a 4TB Hard Drive

This Hard Drive is ideal for small-to-medium businesses, home offices, and power users who need a dependable, energy-efficient storage solution for multi-bay NAS systems, media servers, or backup arrays.


Specifications
Miscellaneous
Miscellaneous / MTBF1,000,000hours
Storage
Storage / TypeHard drive
Header
Header / Product LineWD Red Plus
Header / Packaged Quantity1
Dimensions & Weight
Dimensions & Weight / Height1in
Dimensions & Weight / Width4in
Dimensions & Weight / Depth5.8in
Dimensions & Weight / Weight19.4oz
Environmental Parameters
Environmental Parameters / Min Operating Temperature32 °F
Environmental Parameters / Max Operating Temperature149 °F
Environmental Parameters / Min Storage Temperature-40 °F
Environmental Parameters / Max Storage Temperature158 °F
Environmental Parameters / Shock Tolerance (non-operating)250 g @ 2 ms
Environmental Parameters / Shock Tolerance (operating)70 g @ 2 ms
Environmental Parameters / Sound Emission27 dBA
General
General / Capacity4 TB
General / Depth5.8 in
General / Buffer Size128 MB
General / Width4 in
General / Weight19.4 oz
General / InterfaceSATA 6Gb/s
General / Device TypeHard drive - internal
General / Form Factor3.5"
General / FeaturesConventional magnetic recording (CMR), Air Drive Design, Advanced Format technology, NAS compatible, NASware technology
General / Height1 in
Expansion & Connectivity
Expansion & Connectivity / Interfaces1 x SATA 6 Gb/s
Expansion & Connectivity / Compatible Bay3.5"
Performance
Performance / Drive Transfer Rate600 MBps (external)
Performance / Spindle Speed5400 rpm
Performance / Internal Data Rate180 MBps
Reliability
Reliability / 24x7 OperationYes
Reliability / MTBF1,000,000 hours
Reliability / Non-Recoverable Errors1 per 10^14
Reliability / Load / Unload Cycles600,000
Hard Drive
Hard Drive / Internal Data Rate180MBps
Hard Drive / Form Factor3.5"
Hard Drive / Non-Recoverable Errors1 per 10^14
Hard Drive / Spindle Speed5400rpm
Hard Drive / InterfaceSerial ATA-600
Hard Drive / Form Factor (Short)3.5"
Hard Drive / 24x7 OperationYes
Hard Drive / Form Factor (Short) (metric)8.9 cm
Hard Drive / Capacity4TB
Hard Drive / Data Transfer Rate600MBps
Hard Drive / Buffer Size128MB
Hard Drive / Hard Drive TypeInternal hard drive
Hard Drive / Form Factor (metric)8.9 cm
Power
Power / Power Consumption4.5 watt (read) ¦ 4.5 watt (write) ¦ 2.9 watt (idle) ¦ 0.3 watt (sleep)
Summary Details
HDD capacity4 TB
HDD speed5400 RPM
Storage drive buffer size128 MB
HDD size3.5"
InterfaceSerial ATA III
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