MC04ACA400E Toshiba MC04 4TB SATA 128 MB 3.5" Server HDD

High-Density 3.5-Inch Enterprise SATA HDD for 24x7 Nearline Storage with the MC04ACA400E

The MC04ACA400E is a 3.5-inch Toshiba MC04 Series enterprise HDD designed for consistent nearline throughput and predictable latency in general-purpose servers and SMB/NAS platforms. As a 7.2K RPM CMR drive on SATA, the MC04ACA400E prioritises stable write behaviour for RAID groups and sustained ingestion, avoiding the variability often associated with SMR in mixed workloads.

With a 4TB capacity tier and 512e sector presentation (4Kn with emulation), the MC04ACA400E aligns with modern OS and controller compatibility while supporting efficient block management in common filesystems and software-defined storage stacks. The 128MB cache helps absorb bursty I/O patterns typical of backup, file services, and application data volumes. From a platform perspective, the MC04ACA400E fits standard 3.5-inch hot-swap bays and integrates cleanly behind SAS HBAs via SATA breakout or native SATA backplanes, enabling straightforward expansion and serviceability in dense storage nodes.

Why Choose the MC04ACA400E?

The MC04ACA400E provides a practical density-to-cost profile for bulk storage tiers while maintaining enterprise reliability for 24x7 duty cycles. It scales efficiently in multi-drive enclosures and RAID arrays, supporting predictable rebuild behaviour with CMR recording, and it is well suited for standardised deployment where drive uniformity simplifies spares strategy and operational procedures.

Toshiba designs the MC series around durability, consistent performance, and controlled power characteristics for rack-based environments, aligning with data centre requirements for continuous operation, qualification consistency, and long-term platform availability.

Key Applications:

• Nearline data repositories
• RAID arrays for NAS file services
• Backup and archive targets
• General-purpose server data volumes
• OS and boot pools

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage node or NAS rollout, and from bulk order discount options that support standardised MC04ACA400E deployments across larger fleets.