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WD Ultrastar 16TB SATA Enterprise Hard Drive (WUH721816ALE6Lz)


AED 2,600.00 (Inc. VAT)

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Stock Availability :Pre-order (Orderable back to back)

 SATA Series

2TB 4TB 6TB 8TB 10TB 12TB 14TB 16TB 18TB

 RED : NAS Class drive (3 years warranty, less than 7200RPM)

2TB 3TB 4TB 6TB 8TB 10TB
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    • 16TB HC550 Enterprise Drive
    • 5 Years Limited Warranty

    Ultrastar® DC HC550



    • 18/16TB capacity in a standard 3.5-inch form factor
    • CMR technology works with all capacity enterprise applications & environment
    • Reliable, field-proven, 6th generation design
    • Industry’s first HDD with Energy Assisted Magnetic Recording technology
    • Industry’s first Triple Stage Actuator
    • HelioSeal® design delivers outstanding power efficiency (Watts/TB)
    • Self-Encrypting Drive Options
    • 2.5M hours (projected) MTBF rating & 5-year limited warranty


    • Cloud & Hyperscale storage
    • Distributed File Systems
    • Bulk storage using object storage solutions like Ceph™ and OpenStack® Swift
    • Primary and secondary storage for Apache Hadoop® for Big Data Analytics
    • Massive scale-out (MSO), high-density data centers

    Total Cost of Ownership (TCO) Drives the DataCenter Architecture

    Data center decisions are driven by TCO. Higher capacity hard drives play a leading rolein reducing TCO. An 18TB data center HDD provides 29% more capacity in the sameform factor as a 14TB HDD. Higher capacity HDDs enable data centers to lower CAPEX by reducing supporting hardware and system level costs when compared to lower capacitydrives. Helium-sealed, low power, high reliability drives reduce energy and maintenancecosts, contributing to OPEX savings. For example, a data center using 18TB HDDs vs. 14TBHDDs requires 22% fewer racks while consuming 21% less power per TB at idle, resulting insignificant overall TCO reduction for data center environments

    Raising the Capacity Bar with New Technologies

    Ultrastar DC HC550 integrates a suite of technologies on a 9-disk platform to create anew class of HDDs. 18TB capacity is achieved by combining technologies that improveareal density working together with technologies that improve IOPS and reduce power consumption

    • The first HDD in the industry to harness Energy Assisted Magnetic Recording (EAMR)technology that enables higher media precision and therefore increased areal density
    • The industry’s first Triple Stage Actuator (TSA) enhances head-positioning accuracy,applications & environmentsdelivering better performance and data integrity to increase areal density.
    • HelioSeal® technology is the foundation for Western Digital’s high capacity HDDs and this is the 6th generation of HelioSeal product. Western Digital has shipped >65 million HelioSeal products to date

    Trusted Reliability and Quality for Data at Scale

    With its massive capacity and 2.5M MTBF (projected) reliability rating, the Ultrastar DC HC550 is ideal for object storage implementations. Object storage systems with erasure coding provide better data durability compared to RAID systems, given their tolerance for simultaneous error conditions.

    The DC HC550 offers security and encryption options to help protect data fromunauthorized use, including SED models in both SATA & SAS. An optional SED-FIPS will be available in a SAS configuration.

    Trust Western Digital and the Ultrastar DC HC550 hard drive to deliver highest capacity, lower TCO and more value to your data center.

    Features and Benefits


    Feature / Function



    18/16TB Provides 29% more capacity than 14TB helium-drives

    Power Efficiency

    Ultra-low Watts per terabyte (W/TB) 21% lower idle W/TB than 14TB Ultrastar helium-filled drives


    • Triple Stage Actuator and Two-Dimensional Magnetic Recording (TDMR) technology
    • Rotational Vibration Safeguard (RVS)
    • Media Cache Plus architecture
    • SATA 6Gb/s & SAS 12Gb/s
    • 512MB cache buffer
    • More accurate head positioning, especially in multi-drive environments, for better performance and data integrity
    • Maintains drive performance in high rotational vibration environments and multi-drive systems
    • Better random write performance
    • Provides compatibility with high-performance data centers
    • Improves response time and data management


    • Dual Safe, RSA-signed firmware
    • 2.5M hours MTBF² and 0.35% AFR
    • 5-year limited warranty
    • Retains previous firmware version for safe firmware updates, verified with an RSA signature
    • Unsurpassed reliability rating for Capacity Enterprise HDD for fewer failures/less service needs
    • Unbeaten for enterprise-class hard drives

    Data Security

    Encryption options on both SATA and SAS models Hardware-based encryption helps protect data from unauthorized use (SED options)



    SATA Models

    SAS Models

    Model Number

    • WUH721816ALE6Lz


    • WUH721816AL52z




    SATA 6Gb/s SAS 12Gb/s


    18/16TB -

    Format : Sector size (bytes)

    4Kn: 4096

    512e: 512

    4Kn: 4096, 4160, 4224

    512e: 512, 520, 528

    Areal Density (Gbits/sq. in, max)

    1022 (18TB), 918 (16TB)  



    Data buffer4 (MB)

    512 -

    Rotational speed (RPM)



    Latency average (ms)



    Interface transfer rate (MB/s, max)



    Sustained transfer rate (MiB/s, max)

    257 (18TB), 250 (16TB)





    Error rate (non-recoverable bits read)

    1 in 10


    Load/Unload cycles (at 40°C)



    Availability (hrs/day x days/wk)

    24 x 7


    MTBF2 (M hours, projected)



    Annualized Failure Rate (AFR, projected)




    Up to 550 TB/year


    Limited warranty (yrs)






    Idle/Operating (Bels, typical)







    +5 VDC, +12VDC


    Operating6 (W)



    Idle (W)



    Power consumption efficiency at idle (W/TB)

    • 18TB
    • 16TB
    • 0.31
    • 0.35
    • 0.32
    • 0.36

    Physical Size



    z-height (mm)



    Dimensions (width x depth, mm)

    101.6 (+/-0.25) x 147


    Weight (g, max)



    Environmental (Operating)



    Ambient temperature

    5° to 60°C


    Shock (half-sine wave, 2ms, G)



    Vibration (G RMS, 5 to 500Hz)

    0.67 (XYZ)


    Environmental (Non-operating)



    Ambient temperature

    -40° to 70°C


    Shock (half-sine wave, 2ms, G)

    250 (2ms)


    Vibration (G RMS, 2 to 200Hz)

    1.04 (XYZ)


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