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Silver 3.5 inch bare hard drive with exposed circuit board

Toshiba

Toshiba MG03ACA400 4TB 7200 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-W1JG-CZ1SA MPN MG03ACA400

A 4 TB enterprise hard drive with 7200 RPM speed, 64 MB cache and SATA 6.0 Gb/s interface built for 24x7 operation

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB

Capacity 4TB

  • 4 TB capacity for large-scale data archives
  • 7200 RPM spindle speed for responsive enterprise workloads
  • 64 MB cache buffer to smooth burst transfers
  • 24x7 operation rating for continuous server duty
  • Rotational vibration technology for stable multi-drive arrays

Enterprise storage drive

The Toshiba MG03ACA400 is a 4TB 3.5-inch internal hard drive built for 24x7 enterprise workloads. It delivers 7200 RPM performance over a SATA 6.0Gb/s interface with a 64MB cache. This unit suits server arrays, backup targets and tiered cloud infrastructure requiring sustained throughput.

Bare drive mounting and vibration tolerance

Supplied as a bare drive, it fits standard 3.5-inch bays with a 26.1 mm z-height. Rotational Vibration Technology maintains stability when installed alongside multiple drives in dense enclosures. The SATA connector and power pins follow the familiar layout for quick integration into existing caddies or backplanes.

Capacity and speed decision point

At 4TB and 7200 RPM this model sits at the top of the MG03ACA line for single-drive capacity. Buyers needing more storage per bay must look beyond this series. The SATA 6.0Gb/s link caps peak transfer, so workloads demanding higher bus bandwidth will not be satisfied.

How it compares

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

Price $101.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $25.50 per TB
Cheaper than about 88% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameTOSHIBA
Model nameMG03ACA400
Total capacity4 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.65 kg
Package size163 × 109 × 30 mm

Other versions of this model

3 more in the same range

Questions about this item

Does the SATA 6.0Gb/s interface limit real-world throughput to the 6 Gbit/s line rate?

The SATA 6.0Gb/s link caps burst transfers at 6 Gbit/s; sustained sequential reads from the 7200 RPM platters typically run well below that ceiling.

Will the 26.1 mm height fit a standard 3.5-inch drive bay or hot-swap tray?

Yes, the industry-standard 3.5-inch 26.1 mm form factor matches common server bays and desktop cages without adapters.

Is any jumper or BIOS setting required to enable the 6.0Gb/s link on this bare drive?

No jumpers are needed; the drive auto-negotiates 6.0Gb/s on any compliant SATA controller, but the host must also support 6 Gbit/s.

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