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Silver 3.5 inch internal hard drive with label showing 12TB capacity

Toshiba

Toshiba N300 12TB 3.5" 7200 RPM 512MB CMR SATA internal hard drive HDWG51CUZSVA

SKU CH-9DDV-ZRZ0F MPN HDWG51CUZSVA

12TB 3.5-inch desktop drive with 7200 RPM CMR technology and 512MB cache for NAS workloads

  • Total capacity12 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • Cache memory512 MB
  • High capacity for large NAS libraries with 12TB storage
  • Fast data access from 7200 RPM spindle speed
  • Sustained throughput via 512MB cache buffer
  • Reliable SATA 6.0Gb/s interface for NAS compatibility
  • CMR recording technology suited to multi-bay NAS workloads

12TB NAS hard drive for multi-bay enclosures

The Toshiba N300 HDWG51CUZSVA is a 12TB desktop internal hard drive built for network-attached storage systems. It targets home and small-business users who need large-capacity, always-on storage in a 3.5-inch form factor. The drive is new and uses conventional magnetic recording technology.

CMR recording technology for RAID arrays

The single specification that determines suitability is the CMR recording technology. Unlike shingled magnetic recording drives, CMR writes data in parallel tracks without overlapping, delivering consistent write performance during rebuilds and sustained RAID workloads. This makes the drive appropriate for multi-drive NAS environments where steady throughput matters.

7200 RPM with 512MB cache under continuous operation

At 7200 RPM and with a 512MB cache, the drive maintains stable transfer rates during long sequential reads and writes typical of NAS duties such as backups, media streaming and file sharing. The SATA 6.0Gb/s interface does not saturate under these sustained loads, so the mechanical speed and cache depth define real-world throughput rather than burst-speed figures.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $358.99
Pricier than about 87% of the 4,938 comparable items (median $107.99).
Total capacity 12 TB
Higher than about 90% of the 2,372 comparable items (median 2 TB).
Price per TB $29.92 per TB
Cheaper than about 83% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameTOSHIBA
Product lineN300
Model nameHDWG51CUZSVA
Part numberHDWG51CUZSVA
Total capacity12 TB
Recommended useFor NAS systems
Performance
Rotational speed7,200 RPM
Storage
Recording methodCMR
Cache memory512 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.68 kg
Package size178 × 140 × 38 mm

Questions about this item

What does the 7200 RPM speed mean for real-world NAS workloads?

The 7200 RPM spindle keeps platters spinning fast enough to sustain the throughput multi-bay NAS arrays need for concurrent media streams and backup jobs.

How does the SATA 6.0Gb/s interface limit actual transfer rates?

The SATA 6.0Gb/s link sets the electrical ceiling; the drive’s own 512MB cache and CMR recording determine the sustained rates you will see.

Will the 3.5" form factor fit my four-bay NAS chassis?

The 3.5" form factor matches the standard drive bays used in virtually all four-bay and larger NAS enclosures.

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