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Silver rectangular 2.5 inch 15mm thick bare hard drive with circuit board visible

Seagate

Seagate ST4000LM024 BarraCuda 4TB 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" 15mm laptop hard drive

SKU CH-X7VQ-R0SVH MPN ST4000LM024

A 4TB 2.5-inch laptop hard drive with 5400 RPM, 128MB cache and SATA 6.0Gb/s interface

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Flash memory typeMLC
  • Cache memory128 MB

Capacity 4TB

  • Stores 4TB of files in a single 2.5-inch drive
  • 128MB cache speeds up frequent data access
  • 5400 RPM spindle keeps noise and heat low
  • SATA 6.0Gb/s interface fits most laptops and enclosures
  • 15mm height suits high-capacity 2.5-inch bays

4TB 2.5-inch laptop hard drive

The Seagate BarraCuda ST4000LM024 is a 4TB internal hard drive built for laptops and all-in-one desktops that accept a 15mm 2.5-inch SATA drive. It suits users who need high-capacity bulk storage for media libraries, backups and everyday files in a compact form factor.

SATA 6.0Gb/s interface practical limits

The drive connects through a SATA 6.0Gb/s interface and delivers sequential data rates of up to 140MB/s. Real-world throughput will be lower than the interface ceiling and varies with workload, host controller and cable quality. The 5400 RPM spindle speed and 128MB cache optimise the drive for steady streaming rather than random-access speed.

15mm height and bare-drive packaging

Verify that your laptop or chassis can accommodate a 15mm z-height 2.5-inch drive before ordering. The unit ships as a bare drive without mounting brackets, screws or cables, so you must supply any required hardware. Systems limited to 7mm bays or proprietary drive trays will not accept this model.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $169.99
Pricier than about 81% of the 645 comparable items (median $66.99).
Total capacity 4 TB
Higher than about 91% of the 419 comparable items (median 320 GB).
Price per TB $42.50 per TB
Cheaper than about 94% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda
Model nameST4000LM024
Total capacity4 TB
Recommended useFor Daily Computing
Performance
Rotational speed5,400 RPM
Storage
Flash memory typeMLC
Cache memory128 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height15 mm
Maximum width69.85 mm
Maximum length100.35 mm
Shipping weight0.18 kg
Package size86 × 81 × 20 mm

Other versions of this model

4 more in the same range

Questions about this item

Should I choose the 15mm 4TB model or a thinner 7mm drive?

The 15mm z-height is required for this 4TB capacity; 7mm versions only reach up to 2TB, so pick the 15mm model if you need 4TB and your laptop bay accepts 15mm height.

What does the 140MB/s headline figure mean once the drive is in a real machine?

140MB/s is the maximum sustained transfer rate the drive can deliver over SATA 6.0Gb/s; actual speeds vary with file size, fragmentation and system workload, but sequential reads and writes typically approach this figure.

How does the SATA 6.0Gb/s interface cap performance in practice?

SATA 6.0Gb/s provides a 600MB/s theoretical ceiling, so the drive's 140MB/s maximum sustained rate operates well within the interface limit and will not be bottlenecked by the SATA link.

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