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Western Digital 4TB WD Red Plus NAS Hard Drive 3.5"

Western Digital WD40EFZX

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Red Plus Model WD40EFZX

UPC Code: 718037884394

Provantage Code:  WNDG334

Condition:  Factory New

  • Product Type: Hard Drive
  • Form Factor: 3.5"
  • Product Family: Red Plus
  • Product Model: WD40EFZX

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Western Digital WD40EFZX Specifications

    4TB WD Red Plus NAS Hard Drive 3.5"

At a Glance

    • Available in capacities ranging from 1-14TB with support for up to 8 bays
    • Supports up to 180 TB/yr workload rate*
    • NASware™ firmware for compatibility
    • Small or medium business NAS systems in a 24x7 environment
    • 3-year limited warranty


    Tackle Intensity with WD Red™ Plus

    Packed with power to handle the small- to medium-sized business NAS environments and increased workloads for SOHO customers, WD Red™ Plus is ideal for archiving and sharing, as well as RAID array rebuilding on systems using ZFS and other file systems. Built and tested for up to 8-bay NAS systems, these drives give you the flexibility, versatility, and confidence in storing and sharing your precious home and work files.

    For Small or Medium Businesses

    Stream, backup, share, and organize your digital content with a NAS and WD Red™ Plus drives designed to effortlessly share content with the devices at your home or business. NASware™ 3.0 technology increases your drives' compatibility with your existing network and devices. For larger businesses with up to 24 bays, count on WD Red™ Pro drives to deliver exceptional performance.

    Exclusive NASware 3.0

    Not just any drive will do. Get up to 14TB of capacity in your 8-bay NAS system and with Western Digital's exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red™ Plus hard drive, NASware 3.0's advanced technology improves storage performance by increasing compatibility, integration, upgradeability, and reliability.

    Built for Optimum NAS Compatibility

    WD Red™ Plus drives with NASware™ technology takes the guesswork out of selecting a drive. Optimized for NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put, a WD Red™ Plus drive is one of the most compatible drives available for NAS enclosures. But don't take our word for it. WD Red™ Plus drives are a reflection of extensive NAS partner technology engagement and compatibility- testing.

    WD Red™ Pro for Big Business

    If you're looking for heavy duty performance for NAS, WD Red™ Pro drives deliver exceptional performance for the medium to large business customer with extreme demands. For NAS environments with 9 to 24 bays, WD Red™ Pro drives deliver uncompromising performance and unwavering assurance backed by a 5-year limited warranty.

    More from the Manufacturer


Product Name4TB WD Red Plus NAS Hard Drive 3.5"
Product TypeHard Drive
Buffer128 MB
Wireless LANNo
Product FamilyRed Plus
Drive InterfaceSATA
Drive Interface StandardSATA/600
Spindle Speed (rpm)5400
Drive TypeInternal
Form Factor3.5"
Device SupportedStorage System
Storage Capacity4 TB
Environmentally FriendlyYes
Environmental CertificationRoHS
Endurance (TBW)180 TB
Recording TechnologyConventional Magnetic Recording (CMR)
Product ModelWD40EFZX
Product LineRed Plus
Limited Warranty3 Year
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Western Digital Red Plus Model WD40EFZX