The Western Digital WD43PURZ Purple Surveillance HDD offers 4TB of reliable storage designed specifically for continuous recording. With a 3.5" form factor and SATA 6Gb/s interface, this drive delivers efficient data transfer at a low 5400RPM speed, optimizing power consumption and reducing noise. Its 64MB cache ensures smooth performance during high-demand surveillance tasks. Backed by a 3-year warranty, it provides dependable long-term security for your monitoring system. Ideal for safeguarding your property with consistent, high-capacity video storage.