MG04SCA400A Toshiba MG04 4TB SAS 64 MB 3.5" Server HDD

High-Performance 3.5-inch Enterprise SAS HDD featuring 24x7 bulk-capacity reliability with the MG04SCA400A

The MG04SCA400A is a 3.5-inch enterprise SAS hard drive engineered for server and storage array bulk-capacity tiers where predictable latency and controlled rebuild behavior matter more than peak IOPS. Designed to integrate cleanly into modern CPU platforms with PCIe-based host connectivity via SAS HBAs and RAID controllers, the MG04SCA400A supports scalable drive counts in dense JBODs and shared storage shelves without compromising operational consistency.

With 7200 RPM CMR recording and 4Kn native sector formatting, the MG04SCA400A aligns with contemporary file systems and object/archive stacks that benefit from larger sector efficiency and reduced overhead. Its cache design and sustained-transfer focus support sequential throughput for backup and nearline use, while SAS dual-port architectures and RAID-aware deployment patterns improve service continuity. Power characteristics are tuned for always-on duty cycles, enabling controlled thermals and predictable rack-level power planning in mixed HDD/SSD pools.

Why Choose the MG04SCA400A?

The MG04SCA400A provides a pragmatic density-to-performance balance for enterprises standardizing on SAS for availability and managed expansion. It is well suited for scaling RAID-based capacity pools, minimizing risk through proven mechanical design, and maintaining consistent behavior across large fleets where firmware uniformity and lifecycle planning are operational priorities.

Toshiba designs the MG-series with an engineering emphasis on sustained 24x7 operation, compatibility with established SAS storage ecosystems, and reliability practices aligned to data center serviceability expectations, including stable operation under continuous vibration and thermal load profiles.

Key Applications:

• Server and storage array bulk capacity
• 24x7 data center duty cycle deployments
• Backup and recovery repositories
• Archive and nearline storage tiers
• RAID-based storage pools

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and roll-out timeline, and you can extend the warranty up to 6 years to protect long-life deployments of the MG04SCA400A across multiple racks and sites.