Product DescriptionWestern Digital Purple 18 TB SATA Hard Drive is a high capacity internal drive specially engineered for video surveillance and continuous recording systems. It supports constant 24/7 operation and is optimized to handle streaming and writing from multiple cameras at once while resisting vibration and heat fluctuations common in NVR and DVR rack setups. The large 18 TB capacity provides plenty of storage for long term video retention, and the drive’s firmware includes technology designed to reduce frame loss and improve video playback stability in busy multi camera environments. This makes the drive a reliable choice for security systems, data centers, and any installation where dependable, high-volume video data storage is required.