4TB Internal Hard Drive for Ajax NVR - SATA 6 Gb/s, 256 MB Cache, 3.5" Western Digital

Product description:

Western Digital 4 TB WD Purple Surveillance Internal Hard Drive – High-Capacity Storage for Ajax NVR Systems

Maximize your Ajax NVR’s recording potential with the Western Digital WD Purple 4 TB Surveillance Internal Hard Drive (Model: WD42PURZ). Purpose-built for 24/7 security applications, WD Purple drives use AllFrame™ technology to reduce frame loss and improve video playback, ensuring reliable footage storage for high-resolution camera systems.

Key features:

• Surveillance-Optimized – Designed for continuous operation with AllFrame™ firmware to enhance reliability and video quality.

• Generous 4 TB Capacity – Store weeks or months of HD or 4K surveillance footage, depending on system setup.

• Perfect NVR Fit – 3.5″ SATA III (6 Gb/s) interface matches Ajax NVR requirements.

• 256 MB Cache – Speeds up access to recorded clips and smooths high-volume write operations.

• Low Power Draw – Operates within the Ajax NVR’s 7 W power budget for stable, cool performance.

• Proven WD Purple Durability – Built to handle the demands of multiple HD camera streams in 24/7 environments.

Ideal For

• Medium to large Ajax NVR installations.

• Continuous 24/7 recording with multiple HD or 4K IP cameras.

• Systems requiring extended video retention for compliance or review.

Specifications

• Capacity: 4 TB

• Interface: SATA III 6 Gb/s

• Form Factor: 3.5″

• Cache: 256 MB

• Model Number: WD42PURZ

Installation Note: For best performance, install into your Ajax NVR and format the drive via the Ajax mobile or desktop app before recording.