MORE CAMERAS. MORE CLARITY. MORE SURVEILLANCE. Built for 24/7, always-on, high-definition security systems. With a supported workload rate of up to 180 TB/yr and support for up to 64 cameras, WD Purple drives are optimized for surveillance systems. The Right Drive for the Job WD Purple drives have been engineered specifically for the extreme demands of high temperature, 24/7 surveillance systems. Performance You Can Trust From a worldwide leader in the storage industry, WD Purple is engineered for quality video playback when you need it most. Expand Your View to 64 WD Purple drives are optimized to support up to 64 cameras, giving you flexibility to upgrade or expand your security system. SEAMLESS INTEGRATION With a wide range of industry-leading enclosures and chipsets supported, youre sure to find the configuration and compatibility thats right for your NVR. LESS IS MORE Low power consumption is a must in a high-temperature, always-on surveillance environment. IntelliSeek technology helps reduce damaging ambient noise and vibrations. Hard Disk Disk Capacity     3000 GB Disk Size     3.5 \" Disk Speed     5400RPM Drive Interface     SATA III Data Buffer/RAM     64 MB Performance Data Transfer Rates     Up to 145 MB/s Mean Time Between Failure (MTBF)     1,000,000 hours Electrical Power Requirement Spin Up (Max)     5 W Power Requirement Idle (Ready)     4.4 W Environmental Operating Temperature     0 ~ 65 °C Non Operating Temperature     -40 ~ 70 °C Shock (Operating)     30 G Shock (Non Operating)     250 G Acoustics (Seek Mode)     24 dBA Acoustics (Idle Mode)     23 dBA Physical Form Factor     Hard Disk Drive Enclosure type     Internal In The Box     3TB Hard Drive Width     101.6 mm Depth     147 mm Height     26.1 mm Weight     0.64 kg Warranty Warranty     3 Years Key Features Interface Type     SATA III Cache Memory     64 MB Disk Form Factor     3.5 Interface Type     SATA III Condition     New HDD Purpose     Surveillance Recording Technology     CMR Storage HDD Type     HDD