Western Digital PURPLE 3.5'' DVR HDD 4TB WD42PURZ
- Capacity: 4 TB
- Interface: SATA
- Form Factor: 3.5 Inch
- Cache: 256MB
- Recording Technology: CMR
- Compatibility: 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 with more than eight bays