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Silver rectangular 3.5-inch hard drive with circuit board visible on underside

Seagate

Seagate BarraCuda ST20000DM001 20TB 7200 RPM 512MB SATA 3.5" internal hard drive

SKU CH-SRDR-1ZJR5 MPN ST20000DM001

20 TB 3.5" CMR desktop drive spins at 7200 RPM with 512 MB cache over SATA 6.0 Gb/s

  • Total capacity20 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • Cache memory512 MB

Capacity 20TB

  • Massive 20TB capacity stores your entire media library
  • 7200 RPM spindle speed delivers quick file access
  • 512MB cache accelerates frequent read operations
  • CMR recording technology ensures consistent write performance
  • SATA 6.0Gb/s interface provides broad desktop compatibility

Capacity and interface

The Seagate BarraCuda ST20000DM001 is a 20TB desktop internal hard drive with a SATA 6.0Gb/s interface. It uses CMR recording technology and spins at 7200 RPM with a 512MB cache. The 3.5-inch form factor fits standard desktop drive bays.

Who this suits

This drive suits users who need high-capacity storage for daily computing tasks such as media libraries, backups, and general file storage. Builders who require faster access speeds or a smaller physical form factor should look at other storage types.

Deciding specification

The 20TB capacity is the specification that decides whether this is the right part. It determines how much data the drive can hold and whether it meets the storage requirements for the intended desktop workload.

How it compares

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

Price $203.99
Pricier than about 70% of the 4,938 comparable items (median $107.99).
Total capacity 20 TB
Higher than about 94% of the 2,372 comparable items (median 2 TB).
Price per TB $10.20 per TB
Cheaper than about 98% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda
Model nameST20000DM001
Total capacity20 TB
Recommended useFor Daily Computing
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 height26.1 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.68 kg
Package size146 × 102 × 25 mm

Other versions of this model

1 more in the same range

Questions about this item

How much power does the 20 TB BarraCuda draw during all-day operation?

The drive uses Advanced Power modes to save energy without sacrificing performance, and it runs on the standard SATA 6.0Gb/s interface.

Does the 3.5-inch ST20000DM001 need a SATA power cable and data cable to work?

Yes, it requires a SATA 6.0Gb/s data cable and a SATA power connector from your power supply.

Will this 7200 RPM CMR drive work alongside my older SATA 3 Gb/s hard drives?

The SATA 6.0Gb/s interface is backward compatible with earlier SATA revisions, so it will operate with older drives on the same controller.

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