Western Digital WD4002FYYZ 4TB SATA HD

Western Digital Part #/MPN: WD4002FYYZ

DiscTech Item #: WDC-WD4002FYYZ-RF-OE

  • Low Stock:Call for ETA
    Stock Levels

    This item is currently (nearly) out of stock. It may be possible to arrange fast shipment. If you need it urgently call us. Otherwise, it usually ships within 1 week.


Enterprise Grade

Capacity: 4TB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 201

Electrical Interface: SATA 600 - 6.0Gbps

On-Board Cache: 128MB

Western Digital WD Gold WD4002FYYZ 4TB 3.5 inches 6Gbps 7.2K RPM 512n Enterprise Serial ATA / SATA HDD - Refurbished

Western Digital WD Gold WD4002FYYZ 4TB / 4000GB 3.5" 6.0 Gb/s 7200 RPM 512 Native Enterprise Serial Attached Technology Attachment Hard Disk Drive - Refurbished

WD Gold
Datacenter Hard Drives

Scale it in gold

With up to ten times the workload capacity of desktop drives, WD Gold™ hard drives employ advanced technology to deliver among the best in reliability, capacity, power efficiency and performance. Designed for a multitude of Datacenter-specific applications, WD Gold™ hard drives are perfect for high-availability server and storage arrays that demand the most robust storage device available with 24/7 premium customer support.

Product Benefits

Full range of nearline capacities
From entry-level servers to high end enterprise storage systems, WD Gold™ hard drives offer the capacities required for the most demanding datacenter environments.

High workload capability
Delivering both performance and reliability to any datacenter environment, WD Gold™ hard drives are designed to handle workloads up to 550TB per year which is among the highest workload capability of any 3.5- inch hard drive.

High level of reliability
With up to 2.5 million hours MTBF, WD Gold™ hard drives deliver one of the highest levels of reliability and durability for yearly operation (24x7x365) within the most demanding storage environments.

Vibration protection
Enhanced RAFF™ technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. The result is a significant performance improvement in high vibration environments over our desktop hard drives.

RAID-specific, time-limited error recovery (TLER)
Reduces drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.

Dynamic fly height technology
Each read-write head’s fly height is adjusted in real time for optimum reliability.

Dual actuator technology
A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy.

Compatibility testing
All WD Gold™ hard drives are extensively tested across a variety of popular OEM storage systems, SATA controllers, and host bus adapters, to ensure ease of integration for a plug and play solution.

Enterprise servers, datacenter environments, enterprise storage systems, data warehousing/mining, enterprise NAS, and high end surveillance systems.

The WD Advantage
WD puts datacenter products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. This testing ensures our products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems, and drivers, to ensure an even greater level of quality, reliability, and peace of mind.

WD also has a detailed Knowledge Base with helpful articles and software utilities. Our customer support lines have long operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.


This drive is compatible with any server that accepts 3.5inx1.0in SATA Drive.

WD Gold
512 native model numberWD4002FYYZ
Technical Specifications
Logical/Physical bytes per sector512/512
Formatted capacity4TB / 4000GB
512n/512e user sectors per drive7,814,037,168
InterfaceSATA 6Gb/s
Native Command QueuingYes
Form Factor3.5-inch
RoHS compliantYes
Data transfer rate (max)
  • Buffer to host
  • Host to/from drive (sustained)
  • 6Gb/s
  • 201MB/s
  • Cache (MB)128
    Performance Class7200 RPM Class
    Reliability/Data Integrity
    Load/unload cycles600,000
    Non-recoverable read errors per bits read<1 in 10^15
    MTBF (hours)2,000,000
    AFR (%)0.44
    Power Management
    Average power requirements (W)
  • Sequential read
  • Sequential write
  • Random read/write
  • Idle

  • 7.4
  • 7.4
  • 8.1
  • 5.9
  • Environmental Specifications
    Temperature (°C)
  • Operating
  • Non-operating

  • 5 to 60
  • -40 to 70
  • Shock
  • Operating (half-sine wave, 23ms)
  • Non-operating (half-sine wave)

  • 70G

  • 300 (1 ms)/150 (11 ms)
  • Acoustics (dBA)
  • Idle
  • Seek (average)

  • 29
  • 36
  • Physical Dimensions
    Height (in/mm, max)1.028/26.1
    Length (in/mm, max)5.787/147
    Width (in/mm, ± .01 in)4/101.6
    Weight ((lb/kg, ± 10%)1.58/0.715

    Click here to view the manufacturer's item description/brochure

    ROHS Compliant

    Weight: 1.8 lb

    Warranty: 1 Year DiscTech


    Condition Levels Explained

    These products have had NO problems or failures, they merely have some usage. The product has been professionally returned to excellent condition. These items have been fully tested, formatted (if appropriate) &repackaged. Hard drives are fully vetted for surface defects and wear, only healthy disks are approved for resale to our customers. Please see our refurbishing process for more details. Watch a video about our refurbishing process

    1 Year DiscTech Warranty

    Product Warranties Explained

    The product has a DiscTech warranty for the time period specified. View our limited warranty