Western Digital WD20EURX 2TB 5400 RPM 64MB Cache SATA 3.5" internal hard drive

Surveillance-ready capacity

The Western Digital WD20EURX is a 2TB 3.5-inch internal hard drive built for continuous video recording. It spins at 5400 RPM with 64MB cache and uses the SATA 6.0Gb/s interface. The AV-GP series targets installers and system integrators who need dependable, high-capacity storage for always-on surveillance arrays.

Fits standard drive bays and SATA controllers

The drive measures 147.00mm long, 101.60mm wide and 26.10mm high, matching the 3.5-inch form factor used in most desktop chassis and NAS enclosures. It connects to any SATA host controller and draws power from a standard SATA power connector. SilkStream technology optimises sustained write streams, freeing the system from frame-drop risk during multi-camera recording.

Replaces lower-capacity

The jump is worth it when existing drives cannot sustain round-the-clock write loads or when total capacity falls below the retention window required by the deployment. The drive is not suited for boot or primary application workloads that demand low latency or high random IOPS. Buyers who need faster access times or SSD endurance should look elsewhere.