WD Purple 4TB Surveillance Hard Drive

Model: wd-4tb

Key Features

• AllFrame (or AllFrame 4K) technology — WD’s firmware enhancement to reduce dropped video frames, improve ATA streaming, and make handshakes between the drive and the video recorder more robust in real-world surveillance workloads. High workload rating — It can handle a large volume of data continuously over a year (much higher than desktop HDDs). Vibration and temperature tolerance — Drives in surveillance rigs often operate in multi-bay enclosures and in less-than-ideal temperatures
• the Purple series is engineered for that. Error handling tuned for surveillance — Rather than aggressive error correction that desktop drives use (which can cause long retry delays), surveillance drives often balance error recovery time so that video streams are less likely to stall or drop frames. Compatibility & integration — WD ensures that Purple drives are tested across many DVR/NVR platforms and are firmware-compatible with wide ranges of chipsets, enclosures, and surveillance controllers.