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Silver 3.5 inch bare hard drive with exposed circuit board and SAS connector

Seagate

Seagate Exos X16 ST12000NM002G 12TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" internal hard drive

SKU CH-ACXB-K1KKZ MPN ST12000NM002G

12 TB enterprise SAS drive with 7200 RPM and 256 MB cache for high-capacity storage arrays

  • Total capacity12 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB

Model 12TB Exos X16

  • Enterprise-grade reliability backed by 2.5M-hr MTBF rating
  • 12TB capacity at 7200 RPM with 256MB cache for high throughput
  • SAS 12Gb/s interface enables fast data transfer in scale-out deployments
  • Helium-sealed design lowers power per terabyte and reduces weight
  • Seagate Secure features provide fast, affordable drive retirement and data protection

Enterprise 12 TB SAS drive

The Seagate Exos X16 ST12000NM002G is a 12 TB helium-sealed hard drive built for enterprise storage arrays. It runs at 7200 RPM with a 256 MB cache and connects through a SAS 12Gb/s interface. The 3.5 inch form factor fits standard server bays and the bare-drive packaging is intended for volume deployment.

Suited for high-capacity servers.

This drive suits administrators who need dense, reliable capacity for cloud or scale-out data-centre workloads. The helium design and PowerBalance feature optimise watts per terabyte, while Seagate Secure aids drive retirement. Buyers who require the low latency or high IOPS of solid-state storage should look elsewhere, as should anyone whose platform lacks a SAS controller or backplane.

SAS 12Gb/s interface decides compatibility

The single specification that determines fit is the SAS 12Gb/s interface; the drive will only operate in systems equipped with a compatible SAS host bus adapter or RAID controller. SATA-only backplanes cannot use this model, so verifying the host connection is essential before purchase.

How it compares

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

Price $366.99
Pricier than about 88% of the 4,938 comparable items (median $107.99).
Total capacity 12 TB
Higher than about 90% of the 2,372 comparable items (median 2 TB).
Price per TB $30.58 per TB
Cheaper than about 82% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Model nameST12000NM002G
Total capacity12 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
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 weight0.66 kg
Package size169 × 131 × 33 mm

Other versions of this model

3 more in the same range

Questions about this item

Should I choose the 12TB or 16TB Exos X16 model?

The 12TB ST12000NM002G gives 12TB usable space; the 16TB version provides 33% more petabytes per rack but is a different part number.

What does the 7200 RPM speed mean for real workloads?

7200 RPM with 4.16ms average latency and 256MB cache delivers the highest 16TB-class performance for cloud and massive scale-out data centre applications.

How does the SAS 12Gb/s interface limit transfer rates in practice?

SAS 12Gb/s caps the drive at 12 gigabits per second, optimised for large data transfers and low latency in enterprise storage arrays.

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