Western Digital 0F38461 DC HC550 16 TB 3.5" SATA 7200 RPM 512 MB internal hard drive

High-capacity SATA storage for data centres

The Western Digital DC HC550 provides 16 TB of capacity in a 3.5 inch form factor. It connects through a SATA interface and spins at 7200 RPM. A 512 MB cache helps absorb write bursts. The drive is built for environments that need large sequential throughput rather than low latency.

Sustained workload behaviour

The 7200 RPM spindle speed supports steady sequential read and write rates across the full 16 TB. The large cache smooths mixed random and streaming traffic during long backup or archive jobs. Performance remains consistent because the drive is designed for continuous operation rather than short benchmark runs.

Thermals, noise and power in normal use

The 3.5 inch helium platform keeps operating temperatures lower than conventional air-filled drives of the same capacity. Acoustic output stays at typical enterprise levels for rack-mounted arrays. Power draw scales with the 7200 RPM spindle and the 512 MB cache during active periods.