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Silver 3.5-inch bare hard drive with exposed circuit board and label showing 14TB capacity

Seagate

Seagate Exos X16 ST14000NM005G 14TB 7.2K RPM SATA 6.0Gb/s 512e CMR 3.5in internal hard drive

SKU CH-3CFS-QFX4H

A 14 TB enterprise hard drive with a 7,200 RPM spindle, 256 MB cache, SATA 6.0 Gb/s interface and helium-sealed design for low power and high reliability

  • Total capacity14 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • 14TB capacity fits massive datasets in a single 3.5-inch bay
  • 7200 RPM spindle speed delivers sustained throughput for heavy workloads
  • 256MB cache buffers bursts to keep latency low
  • Helium-sealed design reduces power draw and weight per terabyte
  • 25000000-hour MTBF rating backs long-term reliability in enterprise arrays

Seagate Exos X16 14TB enterprise hard drive

The Seagate Exos X16 ST14000NM005G is a 14TB 3.5-inch internal hard drive built for enterprise storage workloads. It spins at 7200 RPM with a SATA 6.0Gb/s interface and a 256MB cache. A helium-sealed design and PowerBalance technology optimise watts per terabyte for large-scale deployments. The drive carries a 25000000-hour MTBF rating.

Suited for NAS arrays.

This drive fits Network Attached Storage systems, hyperscale cloud environments, distributed file systems such as Hadoop and Ceph, and enterprise backup or restore architectures. Builders needing a 2.5-inch form factor, a different interface, or capacities below 14TB should look elsewhere. The bare-drive packaging assumes the installer can provide mounting hardware and cables.

SATA 6.0Gb/s interface with 512e CMR recording

The single specification that decides compatibility is the SATA 6.0Gb/s interface combined with 512e conventional magnetic recording. The host system must support this interface and sector format for the drive to function correctly. An included SATA power adapter helps ensure compatibility with a wide variety of legacy systems.

How it compares

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

Price $322.99
Pricier than about 84% of the 4,938 comparable items (median $107.99).
Total capacity 14 TB
Higher than about 91% of the 2,372 comparable items (median 2 TB).
Price per TB $23.07 per TB
Cheaper than about 91% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Model nameST14000NM005G
Total capacity14 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Storage
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height25.4 mm
Maximum width101.6 mm
Maximum length147.32 mm

Questions about this item

Will the helium seal on the 14TB 3.5-inch drive need replacement during its service life?

The helium-sealed design is permanent and requires no maintenance or seal replacement over the rated 25000000-hour MTBF.

What limits the 7200 RPM drive first during sustained heavy writes — cache or thermal throttling?

The 256MB cache absorbs bursts, but continuous throughput is ultimately capped by the SATA 6.0Gb/s interface and the physical media transfer rate.

How much heat and noise does the 14TB helium drive produce when running all day in a NAS?

Helium reduces drag and power draw, so the drive runs cooler and quieter than air-filled equivalents at the same 7200 RPM spindle speed.

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