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Silver 3.5 inch enterprise hard drive with SAS connector and label showing 16TB capacity

Seagate

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

SKU CH-HZS6-EM99X

A 16 TB enterprise SAS drive with 7200 RPM, 256 MB cache and 261 MB/s sustained transfer for servers and storage arrays

  • Total capacity16 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • Recording methodCMR
  • 16 TB capacity supports massive enterprise datasets
  • 261 MB/s sustained transfer rate accelerates heavy workloads
  • 256 MB cache boosts burst performance for random I/O
  • Helium-sealed design reduces friction for cooler, reliable operation
  • Hot-plug support enables drive swaps without server downtime

Enterprise 16 TB SAS drive

The Seagate Exos X16 ST16000NM002G is a 16 TB enterprise hard drive built for 12 Gb/s SAS environments. It runs at 7200 RPM with a 256 MB cache and uses conventional magnetic recording for consistent throughput. The helium-sealed design supports sustained transfer rates up to 261 MB/s in a 3.5 inch form factor.

Suited for SAS arrays; not for other interfaces

This drive fits enterprise servers, storage arrays, cloud deployments and backup solutions that use 12 Gb/s SAS backplanes and hot-swap bays. It is not suited for systems that lack SAS host controllers or the cabling and backplane infrastructure required by the interface. Workstations or desktops without enterprise-grade SAS connectivity should consider alternatives.

12 Gb/s SAS interface decides compatibility

The single specification that determines fit is the 12 Gb/s SAS interface. The drive requires a compatible SAS HBA, RAID controller or expander that operates at 12 Gb/s and provides power through the standard SAS connector. Without that controller and cabling the drive cannot communicate or be powered in the target system.

How it compares

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

Price $332.99
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 $20.81 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/IBM
Product lineExos X16
Model nameST16000NM002G
Part number2KH203-003
Total capacity16 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Storage
Cache memory256 MB
Recording methodCMR
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

How do I install the ST16000NM002G in a 3.5" hot-swap bay and what step is often missed?

Slide the drive into the SAS 12Gb/s backplane until the connector seats firmly, then secure the latch; the step often missed is verifying the controller recognises the 4Kn sector format before creating volumes.

What maintenance or replacement will the helium-sealed Exos X16 need over its service life?

The sealed helium design eliminates internal air exchange, so no internal maintenance is required; plan replacement when SMART attributes indicate wear or after the rated workload limit is reached.

What sustained throughput limit appears first during continuous heavy writes on this 7200 RPM SAS drive?

The sustained data transfer rate caps at 261 MB/s, which is the first bottleneck during prolonged sequential workloads.

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