WD Purple 4TB Surveillance Internal Hard Drive

Product Description

The WD Purple 4TB Surveillance Internal Hard Drive is a 3.5-inch SATA III (6 Gb/s) mechanical HDD purpose-built for continuous-run video surveillance systems such as DVRs and NVRs. It’s designed to handle the heavy, constant write demands of multiple HD security cameras recording 24/7 without sacrificing reliability.

Key Attributes:

• Large Storage Capacity: 4 TB of space for storing extensive surveillance footage over long periods.

• Surveillance-Optimized Firmware: Equipped with AllFrame/AllFrame 4K technology, which improves ATA streaming, reduces dropped frames, and enhances video playback reliability — especially important when saving high-definition video streams.

• Designed for Continuous 24/7 Operation: Built to run nonstop in always-on security systems, with a workload rating of up to 180 TB of writes per year — significantly higher than standard desktop drives.

• Supports Multiple Cameras: Optimized to support up to ~64 HD camera streams from a single drive in a DVR/NVR setup, which gives flexibility for system scaling.

• Solid Reliability: Engineering targets include a mean time between failures (MTBF) of ~1 million hours and tarnish-resistant components, making it suitable for demanding surveillance environments.

• Balanced Performance/Efficiency: With a rotational speed around 5400 RPM and moderate sustained transfer rates (around 150–180 MB/s), it balances energy efficiency, quiet operation, and sequential write performance — ideal for continuous recording.

• Low Power Consumption: Intelligent firmware (IntelliSeek) reduces power draw, noise, and vibration compared with general-purpose drives.

• Compatibility: Works with a wide variety of DVRs, NVRs, and surveillance enclosures that accept 3.5″ SATA drives and is backed by a limited manufacturer warranty (typically 3 years