Model Number: WD84PURZ This is a current model, 8TB Purple drive from the HGST series. Used for 15 hours. Due to the short usage time, I've set the condition to "Like New." There are a few scratches on the surface. You can see them in the second photo. Capacity: 8TB, for surveillance cameras, security systems, and continuous recording. CMR (Conventional Magnetic Recording) method, video. ★ Designed and engineered for 24/7 reliability. ★ Designed for high-resolution, always-on surveillance security systems with up to 8 hard disk drives and up to 64 cameras. ★ High-endurance surveillance system drive made for both DVR and NVR security systems. [Cache Size] 256MB [Form Factor] SATA HDD [Interface] 3.5 inch [Compatibility] WD Purple recording storage for surveillance systems supports up to 64 cameras per drive. It is also designed for high-resolution surveillance security systems with 8 or more bays, operating 24/7. Uncompromising storage for surveillance systems. WD Purple drives are built to handle the demands of 24/7 video surveillance recording. This drive is built for surveillance systems and is durable against excessive heat fluctuations and equipment vibrations within an NVR environment. Regular desktop drives are designed for short-term operation and are not suitable for the demanding 24/7 environment of high-resolution surveillance systems. WD Purple drives are reliable surveillance system storage, tested for compatibility with a wide range of security systems. Its unique AllFrame™ technology reduces frame loss and improves overall video playback quality. Genre: HDD Type: 3.5-inch SerialATA internal WD84PURZ WD82PURZ Hard Disk HDD Surveillance Video