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Silver 3.5 inch internal hard drive with black label, SATA connectors visible

Toshiba

Toshiba N300 PRO 20TB 3.5" Internal Hard Drive HDWG62AXZSTB

SKU CH-KE26-BM4KC MPN HDWG62AXZSTB

A 20 TB 3.5-inch SATA hard drive built for 24-bay NAS with 7200 RPM, 512 MB cache and a 300 TB yearly workload rating

  • Capacity20TB
  • Form Factor5.25"
  • Built for medium or large business NAS with up to 24 bays
  • Designed for 24/7 operation with up to 300 TB/year workload rate
  • High reliability with MTTF up to 1.2 million hours
  • 7200 RPM performance with 512 MB cache for fast data access
  • Integrated RV sensors mitigate rotational vibration in RAID environments

Business NAS Storage

The Toshiba N300 PRO 20TB internal hard drive is built for medium and large business NAS enclosures supporting up to 24 bays. It is designed for continuous 24/7 operation in multi-drive environments where data availability is critical.

300 TB Annual Workload Rating

The drive sustains a workload rate of up to 300 TB per year, far above standard desktop drives. This specification determines whether the drive can handle the write intensity of a heavily used RAID array without accelerated wear.

Sustained Multi-Drive Operation

Integrated RV sensors counteract rotational vibration from neighbouring drives, keeping performance consistent during prolonged RAID rebuilds or heavy streaming workloads. A 7200 RPM spindle and 512 MB cache maintain throughput under continuous load rather than just burst speeds.

Highlights

  • Built for medium or large business NAS with up to 24 bays
  • Designed for 24/7 operation with up to 300 TB/year workload rate
  • High reliability with MTTF up to 1.2 million hours
  • 7200 RPM performance with 512 MB cache for fast data access
  • Integrated RV sensors mitigate rotational vibration in RAID environments

Specifications

BrandTOSHIBA
SeriesN300
ModelHDWR62AXZSTB
Capacity20TB
Form Factor5.25"
Shipping weight0.79 kg
Package size191 × 137 × 64 mm

Questions about this item

How does the 300 TB per year workload rating affect daily use in a NAS?

The 300 TB per year workload rating means the drive is built to handle heavy, continuous write and read cycles typical of multi-bay business NAS systems running 24/7.

What does the SATA 6 Gb/s interface limit in a real system?

The SATA 6 Gb/s interface caps the maximum theoretical transfer speed at 6 Gb/s, so sustained throughput will not exceed that limit regardless of the drive's 7200 RPM speed.

Will the 3.5-inch form factor fit a standard 5.25-inch drive bay?

The drive uses a 3.5-inch form factor and requires a 3.5-inch bay or an adapter bracket to mount in a 5.25-inch bay.

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