The Western Digital WD Purple 4TB Surveillance Hard Drive is a 3.5-inch SATA HDD engineered for continuous, always-on mainstream video surveillance systems. The WD44PURZ uses CMR recording technology and WD AllFrame technology to support the write-intensive, high-stream-count workloads typical of DVR and NVR applications. With a 4 TB capacity, 128 MB cache, an annualized workload rating of up to 180 TB/year, RV sensors and support for surveillance systems with up to 16 drive bays, the WD Purple WD44PURZ is designed for scalable security recording deployments. Key Features 4 TB Surveillance Storage: Designed for continuous mainstream DVR and NVR video recording applications. WD AllFrame Technology: Helps reduce video frame drops and improve video recording and playback. 180 TB/year Workload Rating: Built to handle the workload demands of mainstream video surveillance systems. Multi-Camera Support: Supports up to 64 single-stream HD cameras under Western Digital's stated operating conditions. Multi-Bay Design: Supports surveillance storage systems with up to 16 drive bays and includes rotational vibration sensors. Technical Specifications Component Specification Western Digital Series WD Purple Model Number WD44PURZ Produ Type Surveillance Hard Drive Capacity 4 TB Form Factor 3.5-inch Interface SATA 6 Gb/s Disk Speed 5400 RPM Recording Technology CMR Cache 128 MB Advanced Format Yes Firmware Technology AllFrame Camera Support Up to 64 HD cameras Maximum Drive Bays RV Sensors Yes Annualized Workload Rating 180 TB/year MTBF 1,000,000 hours Load/Unload Cycles 300,000 Average Power Read/Write: 4.6 W; Idle: 4.1 W; Standby/Sleep: 0.3 W Operating Temperature 0°C to 65°C Non-Operating Temperature -40°C to 70°C Dimensions 147 × 101.6 × 26.1 mm Weight 0.55 kg RoHS Compliant Yes Limited Warranty 1 year Compatibility & Important Information WD44PURZ is designed for mainstream surveillance DVR and NVR applications using a 3.5-inch SATA drive. This 4 TB configuration supports surveillance storage systems with up to 16 drive bays and includes rotational vibration sensors. Western Digital specifies support for up to 64 single-stream HD cameras at 3.2 Mbps, 1080p, H.265 and 25 fps. Actual results can vary with camera resolution, file format, frame rate, software, system settings, video quality and other system factors. Western Digital provides a Surveillance Compatibility Selector for recorder-specific compatibility checking. Produ Specifications Manufacturers Link https://www.westerndigital.com/ar-sa/products/internal-drives/wd-purple-sata-hdd?sku=WD43PURZ Storage Specification Series Purple Capacity 4 TB Interface SATA 6.0Gb/s RPM 5400 RPM Form Factor 3.5" Warranty Warranty 1 Year Please to review Q: What is the capacity of the WD44PURZ? A: The WD44PURZ provides 4 TB of storage capacity. Q: Is the WD Purple WD44PURZ designed for surveillance systems? A: Yes. Western Digital engineers WD Purple drives for continuous mainstream video surveillance recording in DVR and NVR systems. Q: Does the WD44PURZ use CMR recording technology? A: Yes. WD44PURZ uses CMR recording technology and has a 128 MB cache. Q: How many surveillance cameras can the WD44PURZ support? A: Western Digital specifies support for up to 64 single-stream HD cameras. Actual results vary with camera resolution, format, frame rate, software, system settings and video quality. Q: How many drive bays does the 4 TB WD44PURZ support? A: The WD44PURZ supports surveillance storage systems with up to 16 drive bays and includes rotational vibration sensors. Q: What is the workload rating of the WD44PURZ? A: Its annualized workload rating is up to 180 TB/year. Q: What interface does the WD44PURZ use? A: It is a 3.5-inch hard drive using a SATA 6 Gb/s interface. Q: What warranty is provided with the WD Purple WD44PURZ? A: Western Digital specifies a 3-year limited warranty, with regional warranty terms applying.
