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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

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity4TB
  • NAND Flash Memory TypeMLC
  • Cache128MB
  • RPM5400 RPM

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.

Privalumai

  • 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

Specifikacijos

BrandSeagate
SeriesBarraCuda
ModelST4000LM024
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity4TB
NAND Flash Memory TypeMLC
Cache128MB
RPM5400 RPM
FeaturesBroadest 2.5-inch hard drive portfolio with up to 5TB capacity and both 7mm and 15mm form factors suitable for a variety of compute applications.
Thinnest and lightest 2.5-inch hard drive with up to 2TB storage in a 7mm z-height, providing seamless upgrades of thin and light laptops and smaller form factor systems.
Fast data rates of up to 140MB/s enables superior PC end-user experience and snappier file transfers.
2.5-inch, 15mm z-height hard drives provide 3TB to 5TB in capacity, offering the highest-capacity 2.5-inch hard drives available for external or all-in-one storage.
15mm z
UsageFor Daily Computing
Form Factor2.5"
Height (maximum)15mm
Width (maximum)69.85mm
Length (maximum)100.35mm
Siuntos svoris0.18 kg
Pakuotės dydis86 × 81 × 20 mm

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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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