Western Digital RED Pro 20TB NAS Desktop Hard Drive, SATA III w/ 512MB Cache

MX00121126 RED Pro 20TB NAS Desktop Hard Drive, SATA III w/ 512MB Cache
MX00121126 RED Pro 20TB NAS Desktop Hard Drive, SATA III w/ 512MB Cache MX00121126 RED Pro 20TB NAS Desktop Hard Drive, SATA III w/ 512MB Cache MX00121126 RED Pro 20TB NAS Desktop Hard Drive, SATA III w/ 512MB Cache

Product Info

WD RED™ PRO: The NAS Drive For Your Network Attached Drive Array


Designed specifically with SMB customers in mind, WD Red Pro drives are available for up to 24 bay medium to large-scale 24x7 NAS environments. Engineered to handle increased workloads from your business, WD Red Pro drives are extensively tested and carry a long 5-year limited warranty.

  • Available in large capacities with support for 1-24 bays
  • 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
  • Vibration & Shock protection
  • 5-year limited warranty


NAS for Big Business

Increase the efficiency and productivity of your business with WD Red Pro hard drives for up to 24 bay NAS systems. WD Red Pro comes equipped with NASware™ 3.0, which increases system compatibility allowing for seamless integration with your existing net-work infrastructure. Add value to your business by enabling your employees to quickly share their files and back up folders reliably with WD Red Pro NAS hard drives in your NAS solution.

Exclusive NASware 3.0 Technology

Our exclusive advanced firmware technology, NASware 3.0 enables seamless integration, robust data protection and optimal performance for NAS systems operating under heavy demand.

Built for Optimum NAS Compatibility

Desktop drives aren't purpose-built for NAS. But WD Red Pro drives with NASware 3.0 technology are purpose-built for NAS. Our exclusive technology takes the guesswork out of selecting a drive and balances performance and reliability in NAS and RAID environments. Simply put, a WD Red Pro drive is one of the most compatible drives available for medium to large NAS enclosures. But don't take our word for it. WD Red Pro drives are a reflection of an extensive NAS partner technology engagement and compatibility-testing resulting in a leading compatibility list for NAS systems.

Large NAS Bay Shock Protection

In a Network Attached Storage device, a desktop hard drive is not typically designed for NAS environments. WD Red Pro drives are equipped with a multi-axis shock sensor that automatically detects subtle shock events and dynamic fly height technology which ad-justs each read-write function to compensate and protect the data. This combination of technology further protects the drives in larger 1 to 24 bay NAS environments and helps increase hard drive reliability.

Additional Information:

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Download the Manufacturer Specification Sheet


Make and Model Western Digital Red Pro NAS HDD, 20TB
Part Number WD201KFGX
Capacity 20TB
Buffer Size 512MB cache
Interface CMR, SATA III, 6Gb/s
Form Factor 3.5"
Rotational Speed 7,200 RPM class
Interface Speed 6 Gb/s
Interface Transfer Rate 268 MB/s
Load Cycles 600,000
Non-recoverable Errors Per Bits Read <1 in 1014
MTBF 1,000,000 hours
Temperature Operating: 0° ~ 65° C
Non-operating: -40° ~ 70° C
Shock Operating: 30G (2ms, read/write)
Operating: 50G (2m, read)
Non-operating: 250G (2ms)
Acoustics Idle: 20dBA
Operating: 32dBA
Power Operating: 6.9W
Idle: 3.8W
Standby / Sleep: 1.6W
Dimensions (WxHxL) 101.6 x 26.1 x 147 mm (4" x 1.03" x 5.79")
Weight 1.52 lb. (0.69kg)
  1. As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment.