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

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Product Code07:114139 ManufacturerWestern Digital Form FactorInternal, 3.5" Capacity4TB InterfaceSATA
Form Factor: 3.5", Internal; Capacity: 4TB; Interface: SATA; Product Code: 04:331873; Manufacturer: Western Digital
118.80  inc. VAT
You save: 8.68 
Standard DeliveryStandard delivery within 3 to 8 business days.
Standard DeliveryStandard delivery within 3 to 8 business days.

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


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

WD Red NAS Hard Drive WD40EFAX / Hard drive | WD40EFAX

Special Features

  • Beyond desktop with NASware
  • Important features for system integrators
  • Save power and money
  • Intelligent error recovery
  • Command completion

Product features

  • Beyond desktop with NASware
    WD Red drives include WD's exclusive NASware technology that addresses many of the challenges a traditional desktop hard drive has in a NAS system. WD works directly with the partners to test compatibility and reduce thecustomer'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 optimize power and performance without compromising on the attributes that NAS-system owner's value.
  • Important features for system integrators
    In addition to features that make WD Red drives perfect for populating or upgrading NAS systems, NASware brings features that system integrators need when building specialized NAS systems.
  • Save power and money
    NASware optimizes power use resulting in significant power savings and lower hard drive operating temperatures. This improves the overall reliability and performance of the drive and reduces the NAS cost of ownership.
  • Intelligent error recovery
    With built in intelligent error recovery controls, NASware also prevents hard drives from being dropped off the RAID due to extended error recovery. This provides more availability and less down time rebuilding the RAID.
  • Command completion
    To further improve reliability, NASware minimizes the data corruption or loss in the event of an unexpected power loss by completing the command in process before shutting down.

Product Specification

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 101.6 mm
Depth 147 mm
Height 26.1 mm
Weight 570 g
Drive Transfer Rate 600 MBps (external)
Internal Data Rate 150 MBps
Spindle Speed 5400 rpm
MTBF 1,000,000 hours
24x7 Operation Yes
Non-Recoverable Errors 1 per 10^14
Load / Unload Cycles 600,000
Interfaces 1 x SATA 6 Gb/s
Compatible Bay 3.5"
Power Consumption 4.5 Watt (read) ¦ 4.5 Watt (write) ¦ 3.3 Watt (idle) ¦ 0.4 Watt (sleep) ¦ 0.4 Watt (standby)
Compliant Standards RoHS 2011/65/EU
Service & Support Limited warranty - 3 years
Min Operating Temperature 0 °C
Max Operating Temperature 65 °C
Min Storage Temperature -40 °C
Max Storage Temperature 70 °C
Shock Tolerance (operating) 30 g @ 2 ms
Shock Tolerance (non-operating) 250 g @ 2 ms

Features - Western Digital - WD40EFAX

Form Factor:
  • 3.5"
  • Internal
  • SATA
More Details
Product Code:
EAN Code:
Western Digital
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