MG03ACA400 Toshiba 4TB SATA 64 MB 3.5" Server HDD

High-Performance 3.5-inch Nearline Enterprise SATA HDD for 24x7 Capacity Tiers with the MG03ACA400

The MG03ACA400 is a 3.5-inch internal enterprise HDD engineered for nearline capacity in SATA storage architectures where predictable throughput and sustained duty cycles matter more than peak IOPS. As a 4TB 7200RPM CMR drive, it supports stable write behavior for RAID rebuilds and long sequential streams, helping arrays maintain consistent latency under mixed backup, file, and archive activity.

In server and NAS platforms, the MG03ACA400 integrates cleanly into standard 6Gb/s SATA backplanes and is typically deployed behind a RAID controller or HBA where cache policy and queue depth are tuned for bulk capacity. Its 64MB cache complements sequential transfers, while the mechanical profile is optimized for continuous operation in dense enclosures that require controlled thermals and vibration tolerance for multi-bay scalability.

Why Choose the MG03ACA400?

The MG03ACA400 is positioned for cost-efficient tier-2 capacity pools and repository storage where density, serviceability, and 24x7 reliability are primary design constraints. With an MTBF rating of 1.2M hours and Rotational Vibration Safeguard, the MG03ACA400 supports stable performance in multi-drive RAID sets, reducing variability during sustained workloads and enabling predictable scale-out using standard 3.5-inch bays.

Toshiba’s enterprise HDD engineering focuses on controlled mechanical tolerances, consistent firmware behavior, and validation for continuous-duty deployments. The design approach aligns with modern data center expectations for lifecycle stability, interoperability in SATA ecosystems, and operational resilience across typical 5–55°C environments.

Key Applications:

• Backup and restore repositories
• NAS file services
• RAID capacity expansion
• Tier-2 storage pools
• Archive and content retention

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage rollout planning for the MG03ACA400, and you can extend the warranty up to 6 years to protect long-term capacity investments in always-on arrays.