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    WD Red Pro 16TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - WD161KFGX

    • 2TB
    • 4TB
    • 6TB
    • 8TB
    • 10TB
    • 12TB
    • 14TB
    • 16TB
    • 18TB
    • 20TB
    • 22TB
    • 24TB
    • 26TB
    • Available in capacities ranging from 2 to 26TB with support for NAS systems with up to 24 bays
    • Supports up to 300TB/year workload rate
    • Enhanced reliability with 3D Active Balance Plus technology and error recovery controls with NASware 3.0 technology
    • Extended drive testing to ensure each drive is tested for extended reliable operation
    • 5-year limited warranty
    • Retail or OEM packing may vary
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    Overview
    Specs
    Reviews (48)
    Designed for NAS (Network Attached Storage) environments, these drives are engineered to handle the demands of always-on, multi-user systems, making them ideal for business use and advanced home setups.

    With a massive 16TB of storage per drive, they are well-suited for growing data needs. Their standard 3.5-inch form factor ensures broad compatibility with NAS enclosures. Operating at 7200 RPM, these drives deliver robust performance for simultaneous file transfers, multi-user access, and data-heavy applications. The SATA III (6 Gb/s) interface provides fast, reliable connectivity to the system.

    Each drive features a large cache\u2014typically 256MB or more\u2014which boosts responsiveness and accelerates data access. Optimized for high sustained transfer rates, the drives maintain consistent throughput essential for efficient network-based storage.

    Built for 24/7 operation, these drives surpass the reliability of standard desktop models. With high workload ratings of up to 300TB/year or even 550TB/year depending on the configuration, they are capable of handling heavy, continuous data traffic, making them a dependable solution for high-performance NAS environments

    Warranty & Returns

    Warranty, Returns, And Additional Information

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    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
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    The WD Red Pro WD161KFGX is a 16TB, 7200 RPM CMR internal hard drive for users building or expanding multi-bay NAS and RAID systems, with support for NAS systems of up to 24 bays and workloads up to 300TB per year.

    Recommended For

    • Operators of multi-bay NAS or RAID systems that run continuously and serve multiple users; WD positions the Red Pro for high-intensity, 24/7 NAS use and RAID environments.
    • Small businesses or workgroups that need a large shared-storage drive for frequent file access, backups, and other sustained NAS workloads.
    • Home NAS owners building a large media or file library for access across devices, especially when they want 16TB of CMR storage in a NAS-oriented drive.
    • NAS builders who value drive capacity and sustained access more than a quiet room, and can place the NAS in a ventilated, separate area; testing and owner discussions report noticeable activity noise.

    Spec Summary

    AttributeValue
    Best ForEnterprise NAS and RAID storage environments
    Capacity16 TB
    Interface And Form Factor3.5-inch internal mechanical hard drive with a SATA 6 Gb/s interface
    Performance And Cache7,200 RPM rotational speed, 512 MB cache, and read speed of 259 MB/s
    Recording TechnologyCMR
    NAS Reliability Features3D Active Balance Plus vibration balancing, NASware 3.0 error recovery controls for RAID, and extended drive testing
    CompatibilityCompatible devices include desktop PCs and storage systems; Windows is listed as a system requirement
    Physical Dimensions And WeightMaximum dimensions: 147.00 × 101.60 × 26.10 mm; item weight: 690 g
    Model IdentifiersWD Red Pro, series Red Pro; model WD161KFGX (external model number WD161KFGX-SPAFPN0)