4TB WD Purple Surveillance Internal Hard Drive 9U Compatible with metric ETSI and

Compatible with metric ETSI and 19inch international standard

stereo analysis

Touch keypad front panel & Aluminum alloy frame

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4TB WD Purple Surveillance Internal Hard Drive 9U Compatible with metric ETSI andFeatures: WD Purple surveillance storage is built to handle up to 64 cameras per drive and is designed for 24 7 always on high definition surveillance security systems Engineered specifically for surveillance security systems Tuned for write intensive low bitrate high stream count applications typical to most surveillance applications Prioritized write operations for maximized surveillance performance