Toshiba MG04ACA400N 4TB 3.5" SATA 7200 RPM 128MB internal hard drive

4 TB SATA enterprise drive

The Toshiba MG04ACA400N is a 4 TB 3.5" internal hard drive built for desktop and server workloads. It spins at 7200 RPM with a 128 MB cache and a SATA 6.0 Gb/s interface. The 15 mm z-height fits standard enterprise bays and the 512n sector format keeps compatibility broad.

Suited for bulk storage arrays

This drive suits administrators who need high-capacity, cost-effective storage for backups, archives or near-line data. It is not for systems that require solid-state latency, for laptops or small-form-factor chassis that cannot accept a 15 mm 3.5" device, or for workloads that demand sustained write speeds beyond what a mechanical spindle can deliver.

Four terabytes of sequential headroom

The 4 TB capacity comfortably holds large media libraries, disk images and months of incremental backups. Sequential throughput handles streaming reads and writes for surveillance or media ingest, while random I/O runs out quickly under heavy database or virtualisation loads that need low latency and high IOPS.