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Western Digital  |  SKU: DT-718037899794

Western Digital Red Plus WD40EFPX Internal Hard Drive 3.5" 4000 GB Serial ATA III

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$115.31 USD $129.15
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Hard disk interfaceSerial ATA-600
Connectivity technologySATA
BrandWestern Digital
Special featurePortable
Hard disk form factor3.5 Inches
Hard disk descriptionMechanical Hard Disk
Compatible devicesNAS System
Installation typeInternal Hard Drive
ColourRed
Hard disk size4 TB

  • Available in capacities ranging from 1-14TB(1) with support for up to 8 bays | (1) 1MB = 1 million bytes, 1GB = 1 billion bytes, and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.Specific uses: NAS,Business
  • Supports up to 180 TB/yr workload rate(2) | (2) Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.
  • NASware firmware for compatibility
  • Built for small or medium business NAS systems in a 24/7 environment
  • 3-year limited warranty(3) | (3) MTBF specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions: workload of 90TB/year and drive temperature of 40°C. Derating of MTBF will occur above these parameters, up to 65°C drive temperature. MTBF does not predict an individual drive’s reliability and does not constitute a warranty. Not all products may be available in all regions of the world.


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WD Red Plus NAS internal hard drives are designed with CMR technology for RAID-optimized NAS systems with up to eight bays. Perfect for handling increased workloads associated with small- to medium-sized business environments, including expanded OS compatibility and ZFS.

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Western Digital Red Plus WD40EFPX Internal Hard Drive 3.5 4000 GB Serial ATA III
Western Digital

Western Digital Red Plus WD40EFPX Internal Hard Drive 3.5" 4000 GB Serial ATA III

$115.31 USD $129.15

WD Red Plus NAS internal hard drives are designed with CMR technology for RAID-optimized NAS systems with up to eight bays. Perfect for handling increased workloads associated with small- to medium-sized business environments, including expanded OS compatibility and ZFS.

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