2W11121 Western Digital Purple Pro 24TB 7200RPM SATA-6GBPS 512MB Buffer 3.5 Inch Internal Surveillance HDD.

Product Overview Of Western Digital 24TB 7200RPM SATA-6GBPS HDD

Product Identification 

• Brand: Western Digital Corporation
• Product Family: WD Purple Pro Series
• SKU / Part Number: 2W11121

Maximized Capacity & Enhanced Surveillance Storage

The WD Purple Pro 24TB internal hard drive delivers immense capacity tailored specifically for video-centric environments. With a spacious 24 terabyte data reservoir, it's ideal for storing expansive high-definition footage from multiple surveillance cameras.

• Unmatched 24TB capacity for round-the-clock security footage archiving
• Optimized for large-scale recording systems requiring robust, persistent data retention
• Reduces video frame loss in multi-camera setups

Interface Excellence: SATA 6Gbps for Efficient Data Flow

Equipped with the latest Serial ATA (SATA) 6Gb/s interface, this drive ensures rapid and seamless data transfer. The high-speed bandwidth supports faster read and write operations vital for continuous surveillance recordings.

Data Transfer Technology Highlights

• Integrated 6 Gigabit per second SATA interface for high-throughput applications
• Reliable performance in RAID-enabled environments and NVR systems
• Reduced latency during real-time video streaming and playback

Performance That Powers Real-Time Video Workloads

Operating at 7200 revolutions per minute, this drive provides swift access to recorded video streams, ensuring minimized lag and efficient retrieval of footage in mission-critical scenarios.

Spindle Speed Benefits

• 7,200 RPM ensures consistent frame rate capture for high-definition video
• Improved performance during peak read/write operations
• Lower risk of video degradation or drop-outs in 24/7 environments

Robust Buffer Memory for Smoother Data Management

The embedded 512MB cache allows for quicker data processing, particularly beneficial when handling large video file chunks from multiple sources simultaneously.

Buffer-Driven Efficiency

• Large 512MB buffer ensures efficient data handling during simultaneous write operations
• Minimizes system delays while enhancing real-time recording reliability

Form Factor: 3.5-Inch for Broad Compatibility

With a standard 3.5-inch design, this HDD fits seamlessly into a variety of enterprise-grade DVRs, NVRs, and desktop chassis, simplifying integration for surveillance professionals.

Deployment Flexibility

• Designed to align with mainstream server and storage arrays
• Easy installation in surveillance cabinets, towers, and rack-mounted units
• Compatible with multiple storage infrastructures

Engineered for Surveillance Environments

Harnessing CMR (Conventional Magnetic Recording) technology, the WD Purple Pro offers consistent write performance across large datasets—a must for high-resolution surveillance video.

Reliable Recording Architecture

• CMR provides robust sequential writing capabilities
• Supports high workload rates associated with 24/7 video monitoring
• Advanced Format (AF) ensures compatibility with modern data processing standards

Environmental & Compliance Attributes

This drive upholds sustainability and health standards by being fully RoHS compliant—free from hazardous substances often found in legacy hardware.

Eco-Friendly & Regulation Ready

• RoHS compliance for safer deployment in enterprise environments
• Meets European standards for restriction of hazardous materials
• Designed with long-term operational safety in mind

Reliable OEM Credentials & Manufacturing Quality

Built by Western Digital, a globally trusted name in digital storage, this drive bears the manufacturer part number 2W11121 and belongs to the WD Purple Pro lineup—specially created for AI-enabled NVRs and high-capacity surveillance setups.

Optimized for AI Surveillance Systems

This drive supports deep-learning analytics through elevated performance tuning, designed to handle intensive video streams with artificial intelligence metadata simultaneously.

• Optimized for AI-enhanced video workloads
• Reduces bottlenecks in intelligent surveillance applications
• Ideal for hybrid environments integrating machine learning models

The Western Digital 2W11121 WD Purple Pro 24TB surveillance hard drive is engineered for advanced 24/7 video recording environments, delivering enterprise-class performance with the durability needed for mission-critical security infrastructures. With its 7200RPM spindle speed, 6Gbps SATA interface, and 512MB cache buffer, this 3.5-inch internal HDD is ideal for high-density surveillance deployments where performance, endurance, and capacity are non-negotiable.

Massive 24TB Capacity for Expansive Video Storage

Designed for surveillance systems with large camera counts or ultra-high-definition resolutions, the 24TB storage capacity supports continuous, long-duration footage capture. Security professionals can store thousands of hours of high-resolution video feeds without concern for drive performance degradation or data overwriting. The Purple Pro’s capacity enables seamless scalability for enterprise-level video retention policies.

Support for High Camera Count NVR and DVR Systems

With integrated support for systems operating with up to 64 high-definition cameras, the WD Purple Pro 24TB is optimized for both AI-enabled recording solutions and traditional network video recorders (NVRs) or digital video recorders (DVRs). Its firmware is specifically tuned to handle the demands of multiple simultaneous high-bitrate video streams.

Seamless Integration with Surveillance Workloads

The drive’s AllFrame AI technology enhances ATA streaming to reduce frame loss, improve video playback, and increase the number of supported AI streams. AllFrame AI also provides necessary enhancements for recording metadata and facial recognition feeds alongside video footage without latency.

Advanced Reliability for Continuous Operation

Designed for 24/7/365 Operational Uptime

The WD Purple Pro series is purpose-built to withstand the thermal and mechanical strain of always-on recording. Rated for a 2.5 million hours Mean Time Between Failures (MTBF) and a 550TB/year workload rate, the 2W11121 24TB model guarantees performance in systems where failure is not an option. This durability ensures lower maintenance costs and minimized system downtime in critical surveillance scenarios.

Enterprise-Class Components and Build Quality

Constructed using enterprise-grade materials and precision-engineered platters, this drive handles heavy workloads typically encountered in AI-assisted security analytics, deep learning systems, and edge-to-core surveillance deployments. The drive chassis is designed to reduce vibration and acoustic levels while maintaining high rotational stability at 7200 RPM.

Environmental and Vibration Protection

Equipped with rotational vibration (RV) sensors, the WD Purple Pro 24TB maintains data integrity and performance even in multi-bay RAID surveillance environments. Enhanced vibration resistance allows the drive to operate optimally in rack-mounted chassis where dozens of drives may be simultaneously accessed.

Optimized SATA 6Gb/s Interface for Maximum Data Throughput

High-Speed Sequential Performance

The SATA 6Gb/s interface ensures high-speed connectivity with modern motherboards and surveillance-grade NVR systems. The WD Purple Pro 24TB can efficiently handle simultaneous read/write operations across multiple camera streams while maintaining sustained throughput for HD and 4K video data.

Large 512MB Cache for Accelerated Workload Responsiveness

With its 512MB DRAM cache buffer, the 2W11121 model supports burst workloads and minimizes latency during heavy data writes. This is especially important when managing multiple input streams or when AI inference engines are operating in parallel with live video capture.

Improved Frame Rate and Write Accuracy

The cache architecture contributes to reduced frame loss, smoother streaming, and consistent write performance, especially in demanding 24/7 NVR environments.

AI-Centric Surveillance Ecosystem Compatibility

Built for AI-Enabled Surveillance Systems

WD Purple Pro HDDs are engineered to work with advanced systems that incorporate artificial intelligence for threat detection, behavior analysis, license plate recognition, and more. The 24TB model is fully compatible with systems using GPU-assisted analytics for real-time processing of vast video data sets.

Supports Multi-Stream AI Workloads

Security deployments that include machine learning algorithms and real-time object classification benefit from the drive’s ability to handle multiple AI video streams simultaneously without a drop in performance. This makes it an ideal component for smart city surveillance, corporate security systems, and retail monitoring solutions.

Enhanced Security Features for Enterprise Surveillance Systems

Improved Data Integrity and Error Recovery

Thanks to multi-axis shock sensors and enhanced error correction firmware, the WD Purple Pro ensures long-term reliability, which is essential in environments where tampering, power surges, or thermal anomalies may occur.