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Silver 3.5 inch SATA hard drive with smooth metal casing

Seagate

Seagate Exos X16 ST14000NM003G 14TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-3ZFS-2CY95 MPN ST14000NM003G

A 14TB enterprise hard drive with 7200 RPM, 256MB cache and helium-sealed design for 24x7 operation

  • Total capacity14 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • 14TB capacity stores massive datasets in a single 3.5" drive
  • 7200 RPM and 256MB cache deliver high sustained throughput for enterprise workloads
  • Helium sealed design reduces power draw and weight for lower operating costs
  • SED with FastFormat supports instant secure erase and 512e or 4Kn sector modes
  • 5M hours MTBF rated for continuous 24x7 operation in data centres

Capacity and interface

The Seagate Exos X16 ST14000NM003G is a 14TB 3.5-inch internal hard drive with a SATA 6.0Gb/s interface. It spins at 7200 RPM and includes a 256MB cache for enterprise workloads. A helium-sealed design supports 24x7 operation in dense racks. The drive uses 512e/4Kn sector formats with Seagate Secure encryption.

Suited workloads and limits

This drive suits hyperscale storage, cloud archives and massive scale-out deployments that prioritise capacity per rack and low latency on large sequential transfers. The 2.5M-hour MTBF rating targets continuous duty cycles. Builders needing a smaller footprint or a different interface should consider other form factors. Systems limited to 12TB per bay will not accept this capacity.

Deciding specification

The 14TB capacity combined with the SATA 6.0Gb/s interface determines whether this drive fits the storage array and controller. The 3.5-inch form factor requires a standard drive bay with 26.11mm height clearance. The 512e/4Kn FastFormat must match the host controller's sector-size expectations.

How it compares

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

Price $204.99
Pricier than about 70% 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 $14.64 per TB
Cheaper than about 95% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Model nameST14000NM003G
Total capacity14 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Flash memory typeHard Drive
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.11 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.91 kg
Package size196 × 152 × 76 mm

Questions about this item

How can I verify the ST14000NM003G is operating correctly after installation?

The drive should be recognised by the BIOS or OS at its full 14TB capacity, spin at 7200 RPM with a 4.16ms average latency, and report a healthy SMART status with no reallocated sectors.

What ships with the ST14000NM003G and what must I source separately?

The bare drive arrives in retail or OEM packaging without cables, mounting screws or a SATA power adapter; you must supply a SATA 6.0Gb/s data cable and a compatible power connector.

Which capacity version of the Exos X16 series should I choose for maximum density?

The ST14000NM003G provides 14TB; the series peaks at 16TB for 33% more petabytes per rack compared to 12TB drives, so select 16TB if your chassis and budget allow.

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