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Silver 3.5 inch enterprise hard drive bare unit

Seagate

Seagate Exos X18 16TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" ST16000NM000J

SKU CH-TB4D-RP3GW MPN ST16000NM000J

16 TB enterprise hard drive with 7200 RPM and 256 MB cache for high-capacity storage

  • 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

Model 16TB Exos X18

  • 16TB capacity fits more data per rack
  • 7200 RPM and 256MB cache deliver responsive throughput
  • SATA 6.0Gb/s interface integrates with existing infrastructure
  • Helium-sealed design lowers power per terabyte
  • 5M-hour MTBF rating supports continuous enterprise operation

Highest-capacity enterprise HDD

The Seagate Exos X18 is a 16TB 3.5-inch internal hard drive built for enterprise storage. It spins at 7200 RPM with a 256MB cache and connects through a SATA 6.0Gb/s interface. The helium-sealed design and PowerBalance feature optimise watts per terabyte for large-scale deployments.

Suited for hyperscale and cloud racks

This drive targets cloud data centres and massive scale-out environments that need maximum petabytes per rack. Buyers who require a different interface or a smaller form factor should consider other options. The bare-drive packaging means no accessories are included in the box.

Sustained throughput for large transfers

Hyperscale SATA tuning and enhanced caching deliver consistent performance during prolonged, large data transfers. Average latency is 4.16ms. Digital environmental sensors monitor internal conditions to maintain optimal operation under continuous load.

How it compares

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

Price $456.99
Pricier than about 90% 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 $28.56 per TB
Cheaper than about 84% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X18
Model nameST16000NM000J
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 height26.1 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.67 kg
Package size147 × 102 × 26 mm

Other versions of this model

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Questions about this item

Does my motherboard need a SATA 6.0Gb/s port to use the 16TB capacity of this ST16000NM000J?

Yes, the drive connects through a standard SATA 6.0Gb/s interface; a compatible port and cable are required for full throughput and capacity recognition.

Will this 7200 RPM Exos X18 work in the same 3.5-inch bay and power cables as my older desktop hard drives?

The drive uses the standard 3.5-inch form factor with SATA data and power connectors, so it fits existing bays and cables in most desktop chassis.

How can I verify the 256MB cache and 7200 RPM speed are active after installing the drive?

Check the drive details in your BIOS or use a tool such as CrystalDiskInfo; both will report the 256MB cache size and 7200 RPM rotational speed.

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