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Silver 3.5-inch enterprise hard drive, bare circuit board visible, SAS connector on rear edge

Seagate

Seagate Exos X16 16TB SAS 12Gb/s 7200 RPM 256MB 3.5" ST16000NM002G internal hard drive

SKU CH-J3P6-2143H MPN ST16000NM002G

Enterprise SAS hard drive with 16 TB capacity, 7200 RPM speed and 256 MB cache for high-density storage

  • Total capacity16 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • 16TB capacity stores 33% more data per rack than 12TB drives
  • 7200 RPM with 256MB cache delivers highest 16TB hard drive performance
  • 12Gb/s SAS interface enables fast data transfer for enterprise workloads
  • 5M-hour MTBF rating supports reliable continuous operation in data centers
  • 512e/4Kn FastFormat provides flexible sector formatting for modern storage arrays

Enterprise Capacity Upgrade

The Seagate Exos X16 ST16000NM002G is a 16TB 3.5 inch internal hard drive built for enterprise storage arrays. It runs at 7200 RPM with a 256MB cache and connects through a SAS 12Gb/s interface. The drive uses 512e/4Kn FastFormat sectors and carries a 2.5M hour MTBF rating for continuous operation.

Replacing Lower Density Drives

This model delivers 33% more petabytes per rack compared to 12TB competitive products, letting operators consolidate capacity without adding shelves. The jump is worth it when rack space, power budget or drive-count limits are the primary constraints. Average latency sits at 4.16ms under sustained workloads.

Standard 3.5 Inch SAS Installation

The bare drive fits standard 3.5 inch bays measuring 147.00mm long, 101.85mm wide and 26.11mm high, using the regular SAS power and data connectors. Installers must verify the backplane or HBA supports 12Gb/s SAS and the correct sector format for the array controller. No special mounting hardware or cabling is included in the bare drive package.

How it compares

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

Price $255.99
Pricier than about 77% 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 $16.00 per TB
Cheaper than about 94% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Model nameST16000NM002G
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 typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.11 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.67 kg
Package size145 × 117 × 25 mm

Questions about this item

What 3.5-inch drive bay dimensions does the ST16000NM002G require for mounting?

The drive fits a standard 3.5-inch bay with maximum dimensions of 147.00mm length, 101.85mm width and 26.11mm height.

How do I connect the SAS 12Gb/s interface correctly, and what cabling step is often missed?

Attach a SAS 12Gb/s cable to the drive's SAS port and the controller; the step often missed is ensuring the controller also supports 12Gb/s speeds for full performance.

When should I plan to replace this enterprise drive based on its rated reliability?

The drive carries a 2.5M-hour MTBF rating; plan replacement schedules around that endurance figure and your workload intensity.

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