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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

  • InterfaceSATA 6.0Gb/s
  • Capacity20TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache512MB
  • FeaturesStore more, compute faster, and do it confidently with the p

Options 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.

Highlights

  • 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

Specifications

BrandSeagate
SeriesBarraCuda
ModelST20000DM001
InterfaceSATA 6.0Gb/s
Capacity20TB
Recording TechnologyCMR
RPM7200 RPM
Cache512MB
FeaturesStore more, compute faster, and do it confidently with the proven reliability of BarraCuda® internal hard drives.
Build a powerhouse gaming computer or desktop setup with a variety of capacities and form factors.
Use this go-to SATA hard drive solution for nearly every PC application—from music to video to photo editing to PC gaming.
Confidently rely on internal hard drive technology backed by 20 years of innovation.
Migrate and clone data from old drives with ease, using our free Seagate DiscWizard™ software tool.
Enjoy long-term peace of mind with the included two-year limited warr
UsageFor Daily Computing
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Shipping weight0.68 kg
Package size146 × 102 × 25 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

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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