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Silver 3.5-inch enterprise hard drive with exposed circuit board and SAS connector

Toshiba

Toshiba MG08SDA400E 4TB 7200 RPM 256MB SAS 12Gb/s 3.5" internal hard drive

SKU CH-9T9Y-S05G9 MPN MG08SDA400E

4 TB enterprise hard drive with 7200 RPM, 256 MB cache and SAS 12 Gb/s interface for business-critical storage arrays and cloud systems

  • Total capacity4 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • Cache memory256 MB
  • Max height2.6 cm (1.0 in)
  • Enterprise-grade SAS 12Gb/s interface enables high-throughput server storage
  • 7200 RPM spindle speed delivers responsive performance for business-critical workloads
  • 256 MB cache buffers bursts to sustain consistent data rates
  • 550 TB annual workload rating supports demanding enterprise environments
  • Standard 3.5-inch 26.1 mm form factor fits industry server bays

Enterprise SAS drive

The Toshiba MG08SDA400E is a 4 TB 3.5-inch hard drive spinning at 7200 RPM with a 256 MB cache and a dual-port SAS 12 Gb/s interface. It is built for business-critical servers, storage arrays and cloud platforms that need high-capacity, reliable enterprise storage.

Suited for RAID and archive workloads

This drive fits mainstream enterprise arrays, distributed file systems, big-data clusters and centralised surveillance storage where a 550 TB yearly workload rating and sanitise instant erase options are valued. It is not for buyers who need a SATA interface, a smaller form factor or consumer desktop storage.

Dual-port SAS 12 Gb/s interface

The SAS 12 Gb/s connection provides dual-port redundancy and the throughput required by enterprise controllers and backplanes, making it the specification that determines compatibility with your storage infrastructure.

How it compares

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

Price $118.99
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 $29.75 per TB
Cheaper than about 83% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameTOSHIBA
Model nameMG08SDA400E
Total capacity4 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Storage
Cache memory256 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height2.6 cm (1.0 in)
Maximum width10.2 cm (4.0 in)
Maximum length14.7 cm (5.8 in)
Shipping weight0.70 kg
Package size147 × 102 × 25 mm

Questions about this item

How do I install the MG08SDA400E in a 3.5-inch bay and what step is often missed?

Mount the 3.5-inch 26.1 mm drive in the bay, connect the dual-port SAS 12Gb/s cables to the controller, and attach power. The step often missed is verifying the controller negotiates 12 Gb/s link speed on both ports.

What maintenance or replacement will the MG08SDA400E need during its service life?

Plan replacement once cumulative writes approach the 550 TB per year workload rating or when SMART attributes indicate wear. No scheduled mechanical maintenance is required for the sealed helium platform.

What limit appears first on the MG08SDA400E during sustained heavy writes?

The 550 TB per year workload rating is the first limit under sustained use; exceeding it reduces the expected service life of the 7200 RPM enterprise drive.

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