WD201KFGX WD Red Pro 20TB SATA 512 MB 3.5" Server HDD

High-Capacity 3.5-inch Enterprise NAS HDD featuring CMR recording and 24x7 duty cycle with the WD201KFGX

The WD201KFGX is engineered as a 20TB 3.5-inch SATA hard drive for multi-bay SMB and enterprise NAS platforms where sustained throughput and predictable rebuild behavior are mandatory. Positioned for RAID arrays and always-on file services, it uses CMR recording to maintain consistent write performance under mixed I/O and heavy metadata activity common to virtualization-backed NAS and consolidated backup targets.

In modern storage servers, the WD201KFGX complements CPU- and memory-scaled NAS nodes by providing stable sequential performance and reliable queue handling through NCQ, while supporting 4Kn (512e) sector formats for alignment with current OS and RAID controller standards. A 7200RPM spindle and 512MB cache help absorb bursty writes and accelerate directory-intensive workloads, and the SATA interface enables broad compatibility across HBA- and backplane-based architectures without consuming PCIe lanes needed for networking or cache tiers.

Why Choose the WD201KFGX?

The WD201KFGX delivers a high density-to-bay ratio for capacity expansion in constrained rack footprints, with features tuned for multi-drive enclosures where vibration and recovery behavior impact array availability. With NASware 3.0 and TLER-class error recovery control, the WD201KFGX supports consistent RAID operation, while multi-axis shock sensing and vibration balancing help preserve performance stability as chassis populations scale.

WD designs the WD201KFGX with an enterprise reliability focus, targeting 24x7 operation and long service life in NAS and nearline storage tiers. The platform aligns with data center expectations for monitoring and maintainability through S.M.A.R.T. telemetry, predictable power behavior, and RoHS-compliant materials.

Key Applications:

• SMB and enterprise NAS storage pools
• RAID arrays and multi-bay enclosures
• Backup repositories and disk-to-disk targets
• File services and capacity expansion
• Surveillance and archive retention tiers

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage expansion plan for WD201KFGX deployments, including array sizing and lifecycle considerations. For rollout projects with multiple shelves, ask for a bulk order discount to standardize on WD201KFGX across sites.