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Silver 3.5 inch internal hard drive with green circuit board visible on underside

Seagate

Seagate ST6000DM003 6TB 3.5" SATA 5400 RPM 256MB internal hard drive

SKU CH-0B6H-17EEF MPN ST6000DM003

A 6TB 3.5-inch SATA desktop drive with 256MB cache and 5400 RPM for high-capacity storage

  • InterfaceSATA 6.0Gb/s
  • Capacity6TB
  • RPM5400 RPM
  • Cache256MB
  • Average Latency6Gb/s
  • FeaturesVersatile HDDs for all your PC needs bring you industry-lead

Options 6TB 5400RPM

  • 6 TB capacity stores large media libraries
  • 256 MB cache boosts burst transfer speeds
  • 5400 RPM spindle balances performance and power draw
  • SATA 6.0 Gb/s interface fits standard desktop bays
  • 11 mm height suits typical 3.5 inch drive trays

6TB BarraCuda desktop drive

The Seagate BarraCuda ST6000DM003 is a 3.5-inch internal hard drive with a 6TB capacity and a SATA 6.0Gb/s interface. It spins at 5400 RPM and includes a 256MB cache to handle everyday desktop workloads. The drive measures 146.99mm long, 101.85mm wide and 26.11mm high, fitting standard drive bays. It is designed for daily computing tasks such as storing games, media and documents.

Upgrade from smaller mechanical drives

Replacing a lower-capacity 3.5-inch hard drive with this 6TB model adds substantial space for large libraries without changing the mounting or cabling. The jump is worthwhile when your current drive is full or too slow for bulk file access and you want a single volume up to 8TB. The SATA 6.0Gb/s interface maintains compatibility with existing desktop motherboards and controllers.

Check bay clearance and SATA ports

Verify that your case has a free 3.5-inch bay with at least 26.11mm of vertical clearance and 146.99mm of depth for the drive. Confirm the motherboard or controller has an available SATA 6.0Gb/s port and that your power supply provides a spare SATA power connector. The drive uses standard SATA data and power connections with no special mounting hardware required.

Highlights

  • 6 TB capacity stores large media libraries
  • 256 MB cache boosts burst transfer speeds
  • 5400 RPM spindle balances performance and power draw
  • SATA 6.0 Gb/s interface fits standard desktop bays
  • 11 mm height suits typical 3.5 inch drive trays

Specifications

BrandSeagate
SeriesBarraCuda
ModelST6000DM003
InterfaceSATA 6.0Gb/s
Capacity6TB
RPM5400 RPM
Cache256MB
Average Latency6Gb/s
FeaturesVersatile HDDs for all your PC needs bring you industry-leading excellence in personal computing.
For over 20 years the BarraCuda family has delivered super-reliable storage for the hard drive industry.
Capacities up to 8TB for desktops, BarraCuda leads the market with the widest range of storage options available.
Advanced Power modes help save energy without sacrificing performance.
SATA 6Gb/s interface optimizes burst performance.
Seagate Secure models provide Self-Encrypting Drive (SED) hardware-based data security and deliver an Instant Secure Erase feature for safe, fast and ea
UsageFor Daily Computing
Form Factor3.5"
Height (maximum)26.11mm
Width (maximum)101.85mm
Length (maximum)146.99mm
Shipping weight0.62 kg
Package size150 × 102 × 36 mm

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Questions about this item

What are the exact dimensions of this 3.5 inch drive for case clearance?

The drive measures 146.99 mm long, 101.85 mm wide and 26.11 mm high, so check your drive bay or bracket against those figures before ordering.

Which cables and jumpers are needed to install the SATA 6.0Gb/s interface correctly?

Connect a standard SATA data cable to the motherboard and a SATA power lead from the PSU; no jumpers are required on this drive.

When should the 256MB cache or the 5400 RPM mechanism be monitored for replacement?

Run SMART checks periodically; rising reallocated-sector counts or increasing seek errors signal that the 6000 GB drive is nearing end of life.

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