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Silver 3.5 inch hard drive with green label showing 28TB capacity

Seagate

Seagate ST28000NT000 internal hard drive

SKU CH-XNM7-H9TZ5 MPN ST28000NT000

A 28 TB, 7200 RPM desktop hard drive with 512 MB cache and CMR technology built for 24×7 NAS RAID workloads

  • Total capacity28 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • Cache memory512 MB

Capacity 28TB

  • 28 TB capacity stores massive media libraries and AI datasets
  • 7200 RPM with 512 MB cache delivers responsive multi-user RAID performance
  • CMR recording technology ensures consistent write speeds for 24×7 NAS workloads
  • IronWolf Health Management monitors drive condition to protect data integrity
  • 95 % data-recovery success rate from included Rescue services reduces downtime risk

28 TB CMR NAS drive

The Seagate IronWolf Pro ST28000NT000 is a 28 TB internal hard drive built for 24×7 operation in multi-bay commercial and enterprise NAS systems. It uses CMR recording technology at 7200 RPM with a 512 MB cache to deliver sustained performance under RAID workloads. Media professionals, SMBs and teams running on-prem AI model training gain massive capacity without compromising reliability.

Standard 3.5-inch SATA installation

The drive fits a standard 3.5-inch bay and connects through a SATA 6.0 Gb/s interface with no special cables or adapters required. AgileArray firmware handles dual-plane balancing and time-limited error recovery automatically, reducing the RAID rebuild issues that often appear with desktop drives in multi-bay enclosures. Physical dimensions are 146.99 mm long, 101.85 mm wide and 26.11 mm high.

Verify bay count and vendor list

Confirm that your NAS chassis has enough 3.5-inch bays and that its power supply can support the additional drive. Check the NAS vendor compatibility list for the ST28000NT000 before ordering, as approved firmware revisions vary by manufacturer. Systems limited to smaller capacities or desktop-class drives will not support this 28 TB enterprise model.

How it compares

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

Price $806.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 28 TB
Higher than about 98% of the 2,372 comparable items (median 2 TB).
Price per TB $28.82 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 lineIronWolf Pro
Model nameST28000NT000
Part numberST28000NT000
Total capacity28 TB
Recommended useEnterprise NAS Hard Drives
Performance
Rotational speed7,200 RPM
Storage
Recording methodCMR
Cache memory512 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.11 mm
Maximum width101.85 mm
Maximum length146.99 mm
Shipping weight0.70 kg
Package size147 × 102 × 25 mm

Other versions of this model

5 more in the same range

Questions about this item

How can I confirm the 7200 RPM drive is performing correctly after installation?

Use your NAS vendor's built-in SMART monitoring or Seagate's IronWolf Health Management tool to verify drive temperature, error counts, and RAID sync status during the first 24 hours of operation.

What comes in the box and what must I purchase separately?

The drive ships in retail or OEM packaging; you will need to supply your own SATA data cable, SATA power cable, and 3.5-inch drive bay mounting screws for installation.

Which capacity version should I choose for a multi-bay NAS RAID array?

This model provides 28TB of CMR storage; select it when you need maximum raw capacity per bay for 24×7 enterprise workloads such as video production or on-prem AI model training.

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