WD Purple Surveillance Internal Hard Drive HDD 8TB Capacity: 8 TB Form Factor: 3.5-Inch Connector: SATA Interface: SATA Transfer Rate: up to 215 MB/s Disk Speed (RPM): 5640 RPM Recording Technology: CMR Cache Size: 256 MB Warranty: 3-Year Limited Warranty Dimensions (L × W × H): 147 mm × 101.6 mm × 26.1 mm Weight: 720 g Model Number: WD85PURZ Operating Temperature: 0°C to 65°C Non-Operating Temperature: -40°C to 70°C

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WD Purple Surveillance Internal Hard Drive HDD 8TB< SATA 6 Gb/s, 256 MB Cache, 5640RPM, 3.5"