MG04ACA400E Toshiba MG04 4TB SATA 128 MB 3.5" Server HDD

Enterprise 3.5in SATA Nearline HDD featuring CMR capacity efficiency with the MG04ACA400E

The MG04ACA400E is a 3.5in internal enterprise SATA hard drive engineered for consistent nearline throughput and predictable latency in capacity tiers. In dual-socket server platforms, it is typically deployed behind modern SATA controllers or SAS HBAs in pass-through mode, enabling straightforward integration into RAID pools while keeping CPU overhead low for file services and backup pipelines.

Architecturally, the MG04ACA400E uses CMR recording with 4Kn formatting and 512e emulation to support both modern operating systems and legacy storage stacks without sacrificing write stability under sustained workloads. Its 7200RPM spindle and 128MB cache are tuned for mixed sequential and moderate random I/O patterns typical of repository, archive, and warm retention datasets. The SATA interface supports scalable expansion through multi-bay backplanes, making the MG04ACA400E a practical building block for dense storage nodes where PCIe lanes are reserved for networking, accelerators, or NVMe cache tiers.

Why Choose the MG04ACA400E?

The MG04ACA400E delivers a strong density-to-operational profile for 24x7 arrays, supporting predictable RAID behavior and consistent rebuild characteristics thanks to CMR media. For IT teams standardizing on SATA HDD pools, the MG04ACA400E provides a scalable path to expand capacity shelves with uniform drive classes while maintaining enterprise reliability targets such as 1.4M hours MTBF.

Toshiba designs the MG series with datacentre operating discipline in mind, focusing on long-life mechanics, stable firmware behavior, and qualification for continuous duty cycles. This engineering approach aligns with modern storage standards for monitored operation, controlled thermals, and serviceability within multi-drive enclosures.

Key Applications:

• Backup and restore repositories
• Nearline capacity tiers for virtualized storage
• Archive and compliance retention
• RAID-based SATA HDD pools
• File services and shared storage

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your deployment requirements for the MG04ACA400E and related storage platforms, and you can extend the warranty up to 6 years to strengthen lifecycle planning for large-capacity drive pools.