MG04 Drives

Toshiba MG04 Series Hard Disk Drives

  • Industry Standard 3.5-inch 26.1 mm Height Form-Factor
  • Large Capacity (Up to 6 TB Models)
  • 7,200 rpm Performance
  • 550 Total TB Transferred per Year Workload Rating
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MG04 Drives

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Toshiba MG04 Series Hard Disk Drives

  • Industry Standard 3.5-inch 26.1 mm Height Form-Factor
  • Large Capacity (Up to 6 TB Models)
  • 7,200 rpm Performance
  • 550 Total TB Transferred per Year Workload Rating

Tier 2 Business-Critical Servers and Storage Systems

The MG04ACA Enterprise Capacity HDD models provide capacities up to 4 TB and 7,200 rpm performance, in a robust design engineered for nearline business-critical workloads. Models utilize industry-standard 3.5-inch 26.1 mm height form factor and Advanced Format sector technologies for optimum capacity and data reliability. 

512e or 4Kn Advanced Format sector technology models are available. 4Kn models (MG04ACAxxxA) offer optimum performance and compatibility with the 4K applications and operating environments. 512e models (MG04ACAxxxE) provide support for legacy applications and operating environments that require 512 B sector lengths. 512e models support Toshiba Persistent Write Cache technology which helps enhance performance with handling data in the event of a sudden loss of power. 

MG04ACA are equipped with a SATA 6.0 Gbit/s interface and MG04SCAxxEx models are equipped with a 12 Gbit/s SAS interface to help save rack space and reduce the footprint and operational burden of business critical servers and storage systems.

The Enterprise Capacity HDD 512 native, 7,200 rpm models (MG04ACA-N, MG04SCAxxEN) come in a robust design up of 1, 2 and 4 TB in a 3.5-inch form factor. Features of MG04ACA-N series, with a SATA 6 Gbit/s interface, MG04SCAxxEN series, with a 12 Gbit/s SAS interface, include industry-standard 512 native format sector technology for environments and applications that require 512 native. Model options supporting Sanitize Instant Erase (SIE) are also available. This feature randomizes data instantly in case of unintended disclosure in the event that drives are re-purposed or moved outside of data center environments.

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Key Features

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An Extensive Lineup

Up to 6 TB of capacity in SATA or SAS models with 512e or 4Kn Advanced Format Sector Technology.

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Enterprise Grade Reliability

With an annual workload of 550 TB and MTTF of 1.4 million hours, the MG04 Series is designed for mid-line/nearline business-critical workloads.

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Toshiba Persistent Write Cache Technology

Data-Loss Protection in Sudden Power-Loss Events (512e Model and 6 TB Model).

Toshiba MG04 Series Hard Disk Drive


Available Capacities 4 TB, 2 TB, 1 TB
Form Factor 3.5-inch
Interface SATA: 6 Gbit/s
SAS: 12 Gbit/s
Buffer Size 128 MiB
Rotation Speed 7200 rpm
Data Transfer Speed
( Sustained )
SATA 4 TB: 185 MiB/s
SATA 2 TB: 175 MiB/s
SATA 512n: 195 MiB/s
SAS: 205 MiB/s
SAS-512n: 195 MiB/s
Power Consumption
( Idle - A ) ( Typ. )
7.5 W
MTTF 1 400 000 h
Weight ( Max ) SATA 4 TB, 2 TB: 720 g
SAS: 720g


  • Industry Standard 3.5-inch 26.1 mm Height Form-Factor
  • Large Capacity (Up to 4 TB Models)
  • 7,200 rpm Performance
  • 550 Total TB Transferred per Year Workload Rating
  • 4Kn, 512n Native Sector Technology, or 512e Advanced Format Sector Technology
  • Sanitize Instant Erase (SIE) Option Available


Capacity Format Type Model Number
4 TB 512n Standard MG04ACA400N
4 TB 512n SIE MG04ACA400NY
2 TB 512n Standard MG04ACA200N
2 TB 512n SIE MG04ACA200NY
1 TB 512n Standard MG04ACA100N
1 TB 512n SIE MG04ACA100NY
4 TB 4Kn Standard MG04SCA40EA
4 TB 512e Standard MG04SCA40EE
4 TB 512e SIE MG04SCA40EEY
2 TB 4Kn Standard MG04SCA20EA
2 TB 512e Standard MG04SCA20EE
2 TB 512e SIE MG04SCA20EEY
4 TB 512n Standard MG04SCA40EN
4 TB 512n SIE MG04SCA40ENY
2 TB 512n Standard MG04SCA20EN
2 TB 512n SIE MG04SCA20ENY

MG04ACA600E , MG04ACA600A, MG04ACA600EY, MG04ACA600AY, MG04ACA50DE, MG04ACA50DA, MG04ACA50DEY, MG04ACA50DAY, MG04SCA60EE, MG04SCA60EA: Alternate location of bottom mounting holes is applied TYPE 1. Click here for detail.


  • Engineered for Mid-line / Nearline Business Critical Workloads
  • Tier 2 Business-Critical Servers and Storage Systems
  • Servers Supporting Application Workloads that Benefit from High Capacity per Spindle
  • Capacity-Optimized Data Center Storage Systems
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Where to buy

Toshiba hard drives are currently available at select distributors.

Ways to Buy

*Toshiba does not guarantee the availability of all products or models at these retailers and distributor.


Name Date
MG04A Series Product Overview
MG04ACA Series Product Manual
MG04ACA-N Series Product Overview
MG04SCA Series Product Overview
MG04SCA Series Product Manual
MG04SCA-N Series Product Overview
2.2TB or Larger capacity storage products

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Frequently Asked Questions

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  • Instructions for Dispose
    Please dispose in accordance with local rules.
  • Instructions for erase of the data on the HDDs in case of dispose or transfer
    HDDs incorporated in personal computer or several home appliance may record personal data and/or other important data as signal. In order to avoid disclosing such data, it is important to erase it when you dispose or transfer the HDDs.
  • Product image may represent a design model.
  • Definition of capacity: Toshiba defines a megabyte (MB) as 1,000,000 bytes, a gigabyte (GB) as 1,000,000,000 bytes and a terabyte (TB) as 1,000,000,000,000 bytes. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1GB = 230 = 1,073,741,824 bytes and therefore shows less storage capacity.  Available storage capacity (including examples of various media files) will vary based on file size, formatting, settings, software and operating system, such as Microsoft Operating System and/or pre-installed software applications, or media content.  Actual formatted capacity may vary.
  • A kibibyte (KiB) means 210, or 1,024 bytes, a mebibyte (MiB) means 220, or 1,048,576 bytes, and a gibibyte (GiB) means 230, or 1,073,741,824 bytes.
  • MTTF (Mean Time to Failure) is not a guarantee or estimate of product life; it is a statistical value related to mean failure rates for a large number of products which may not accurately reflect actual operation.  Actual operating life of the product may be different from the MTTF.
  • Read and write speed may vary depending on the host device, read and write conditions, and file size.
  • SIE: Sanitize Instant Erase. SIE is a function to invalidate the data recorded on the magnetic disks at a blink.
  • The HDDs which have any security function may not be available in the countries where the use of such HDDs is prohibited or limited due to export control and local regulations.
  • "2.5-inch" and "3.5-inch" mean the form factor of HDDs or SSDs. They do not indicate drive's physical size.
  • Workload is a measure of the data throughput of the year, and it is defined as the amount of data written, read or verified by commands from the host system.
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