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Silver 3.5 inch bare hard drive with circuit board visible on underside

Seagate

Seagate Exos X16 16TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" Internal Hard Drive ST16000NM001G

SKU CH-HYDQ-SPS94 MPN ST16000NM001G

Enterprise-class 3.5" hard drive delivering 16TB capacity at 7200 RPM with 256MB cache over SATA 6.0Gb/s

  • Total capacity16 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • 16 TB capacity stores 33 % more data per rack than 12 TB drives
  • 7200 RPM and 256 MB cache deliver high throughput for massive scale-out workloads
  • Helium-sealed design cuts power draw and weight to lower total cost of ownership
  • Digital environmental sensors monitor internal conditions for consistent enterprise operation
  • 5 M-hour MTBF rating supports always-on data-centre reliability

16TB Enterprise SATA Hard Drive

The Seagate Exos X16 ST16000NM001G is a 16TB 3.5-inch internal hard drive built for enterprise storage. It spins at 7200 RPM with a 256MB cache and connects via a SATA 6.0Gb/s interface. The helium-sealed design reduces power draw and weight while digital sensors monitor internal conditions.

Ideal for hyperscale and cloud data centers

This drive suits operators who need high-capacity bulk storage with low latency for large sequential transfers. The 512e and 4Kn sector formats fit modern server infrastructures. Buyers who need a different physical interface or a smaller form factor for desktop PCs should look elsewhere.

SATA 6.0Gb/s interface

The single specification that decides compatibility is the SATA 6.0Gb/s interface. The drive requires a matching SATA port and power connector in the host system. The 26.11mm height fits standard 3.5-inch drive bays. No other interface type is supported by this model.

How it compares

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

Price $336.99
Pricier than about 85% of the 4,938 comparable items (median $107.99).
Total capacity 16 TB
Higher than about 92% of the 2,372 comparable items (median 2 TB).
Price per TB $21.06 per TB
Cheaper than about 92% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Model nameST16000NM001G
Total capacity16 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 weight0.66 kg
Package size160 × 135 × 3 mm

Questions about this item

Does the helium-sealed design on this 16TB Exos X16 require any maintenance or refilling over its lifespan?

The helium-sealed drive is permanently sealed at the factory and needs no refilling or maintenance; its 2.5M-hour MTBF rating reflects the sealed design's reliability.

What is the first limit reached during sustained large-file transfers on the SATA 6.0Gb/s interface?

The SATA 6.0Gb/s interface caps sustained throughput, so the interface bandwidth becomes the bottleneck before the 256MB cache or 7200 RPM mechanics saturate.

How does the helium fill and PowerBalance feature affect noise and heat during all-day operation?

Helium reduces internal drag, lowering acoustic output and operating temperature, while PowerBalance optimises watts-per-terabyte for cooler continuous running.

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