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Silver 3.5 inch SAS hard drive labelled Exos X16 16TB

Seagate

Seagate Exos X16 16TB SAS 12Gb/s 7200 RPM 3.5" internal hard drive ST16000NM004G

SKU CH-35FX-EVPRG

High-capacity 16 TB SAS 12 Gb/s drive with 7200 RPM speed and 256 MB cache for demanding storage workloads

  • Total capacity16 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • Average seek time4.1 ms
  • 16TB capacity supports massive data workloads
  • SAS 12Gb/s interface delivers high-speed enterprise connectivity
  • 7200 RPM spindle speed enables fast sequential throughput
  • 1ms average seek time reduces random access latency
  • 256MB cache buffers bursts for sustained performance

Enterprise storage drive

The Seagate Exos X16 is a 16TB 3.5-inch internal hard drive with a SAS 12Gb/s interface and a 7200 RPM spindle speed. It includes 256MB of cache and an average seek time of 4.1ms for high-capacity data storage.

Suits high-capacity servers and arrays

This drive fits servers and storage arrays that accept a 3.5-inch SAS 12Gb/s device and need 16TB of capacity. Builders whose chassis or controller only supports a different physical interface or a smaller form factor should look at other options.

SAS 12Gb/s interface requirement

The drive connects exclusively through a SAS 12Gb/s port, so the host system must provide a compatible SAS controller or backplane. Without that specific interface the drive cannot be used.

How it compares

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

Price $287.99
Pricier than about 81% 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 $18.00 per TB
Cheaper than about 93% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X16
Part numberST16000NM004G
Total capacity16 TB
Performance
Rotational speed7,200 RPM
Average seek time4.1 ms
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Does the ST16000NM004G need a SAS 12Gb/s controller to operate?

Yes, the drive uses a SAS 12Gb/s interface and requires a compatible SAS controller or HBA for connection.

Will the 16TB Exos X16 work in a chassis with existing 7.2K RPM SAS drives?

Yes, it shares the 7.2K RPM spindle speed and SAS 12Gb/s interface, so it integrates with similar enterprise drives.

How can I confirm the 256MB cache is active after installation?

Check the drive identification in your RAID utility or OS device manager; it will report the 256MB cache size for the ST16000NM004G.

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