WD Purple 3TB Surveillance Hard Drive | AllFrame Technology, SATA 6Gb/s, 64MB Buffer

WD Purple 3TB Surveillance HDD WD30PURX | SATA 6Gb/s 64MB 24/7 CCTV Drive

The WD Purple 3TB Surveillance Hard Drive WD30PURX is a 3.5-inch internal CCTV hard drive built for continuous 24/7 video surveillance recording. Designed for DVR and NVR security systems, it combines 3TB of storage with WD AllFrame technology, a SATA 6Gb/s interface and a 64MB cache to provide reliable storage for home, business and professional security camera installations.

Unlike a standard desktop hard drive, the WD Purple WD30PURX is designed specifically for always-on surveillance workloads. Its firmware is optimised for continuous video recording, helping to reduce frame loss, video interruptions and playback problems when surveillance footage needs to be reviewed.

This 3TB WD Purple drive supports surveillance systems with up to 32 HD cameras and up to eight drive bays, making it well suited to CCTV systems that need dependable multi-camera recording. WD AllFrame technology works with ATA streaming commands to improve video capture and playback performance in surveillance environments.

Key Features:

• 3TB Surveillance Storage: Provides substantial capacity for CCTV footage, security recordings and continuous video monitoring.
• Built for 24/7 Operation: Engineered for always-on surveillance systems where recording reliability is essential.
• WD AllFrame Technology: Helps reduce dropped frames, pixelation and video interruptions during recording and playback.
• Up to 32 HD Cameras: Designed to support multi-camera surveillance installations with up to 32 high-definition camera streams.
• Supports Up to 8 Drive Bays: Suitable for compatible multi-bay DVR and NVR surveillance recorders.
• SATA 6Gb/s Interface: Standard SATA III connectivity makes the drive suitable for a wide range of compatible security recording systems.
• 64MB Cache: Supports steady data handling for continuous surveillance workloads.
• 5400 RPM Class Performance: Designed to balance continuous recording performance with power use, heat and noise.
• Up to 145MB/s Sustained Transfer Rate: Provides dependable throughput for surveillance recording and playback.
• IntelliSeek Technology: Optimises seek speeds to help reduce power consumption, vibration and operating noise.
• Surveillance-Class Design: Built to handle the temperature changes and continuous workloads commonly found inside CCTV and security recording equipment.

Designed for CCTV, DVR and NVR Recording

The WD30PURX 3TB surveillance HDD is purpose-built for write-intensive security applications. Surveillance systems may record footage continuously from several cameras at the same time, creating a very different workload from an ordinary desktop computer.

WD Purple addresses this with surveillance-specific firmware and AllFrame technology. This helps maintain smoother video capture and makes recorded footage more dependable when it needs to be retrieved for security review.

For buyers searching for a 3TB CCTV hard drive, 3TB DVR hard drive, NVR surveillance HDD or WD Purple security camera hard drive, the WD30PURX offers a proven storage platform designed specifically for continuous video recording.

WD AllFrame Technology

AllFrame is one of the key differences between WD Purple and a conventional desktop HDD. It works with ATA streaming to optimise the way surveillance video is written to the drive, helping to minimise lost frames and interruptions.

This is particularly important in security systems because missing footage can make recorded video less useful when reviewing an incident. WD specifically designed this generation of Purple drives to support up to 32 HD surveillance cameras.

Compatible with WD My Cloud EX2 and EX4

The WD Purple WD30PURX 3TB is also listed by Western Digital as a supported drive for both the WD My Cloud EX2 and WD My Cloud EX4 systems, providing an additional compatibility option for users maintaining these earlier WD storage platforms. Western Digital's compatibility information was updated in July 2026 and continues to list the WD30PURX for both models.

Technical Specifications:

Specification Details

Brand Western Digital

Product Range WD Purple

Model WD30PURX

Product Type Surveillance Internal Hard Drive

Storage Capacity 3TB

Form Factor 3.5-inch LFF

Interface SATA 6Gb/s

Performance Class 5400 RPM

Cache 64MB

Sustained Transfer Rate Up to 145MB/s

Camera Support Up to 32 HD cameras

Drive Bays Supported Up to 8

Technology WD AllFrame

Usage 24/7 CCTV, DVR and NVR surveillance

Load/Unload Cycles 300,000

Operating Temperature 0°C to 65°C

Non-Operating Temperature -40°C to 70°C

Operating Shock Read/Write 30G for 2ms

Operating Shock Read 65G for 2ms

Non-Operating Shock 250G for 2ms

Dimensions 147 x 101.6 x 26.1mm

Weight Approximately 0.64kg

The manufacturer specification sheet lists 4.4W average read/write power consumption, 4.1W idle and 0.4W standby or sleep for the 3TB WD30PURX.

Ideal For

The WD Purple 3TB WD30PURX is a strong choice for:

• CCTV surveillance systems
• DVR security recorders
• NVR video surveillance systems
• Home security camera storage
• Business CCTV installations
• Retail security systems
• Office surveillance
• Multi-camera HD recording
• Replacement surveillance hard drives
• Expanding compatible DVR or NVR storage
• Compatible WD My Cloud EX2 and EX4 systems

Why Buy the WD Purple WD30PURX?

For a surveillance system that records day and night, storage reliability matters. The WD Purple WD30PURX is designed around the needs of continuous security video rather than general desktop computing.

Its combination of 3TB capacity, AllFrame technology, 64MB cache, SATA 6Gb/s connectivity and support for up to 32 HD cameras makes it an excellent option for replacing or expanding storage in compatible CCTV, DVR and NVR systems.

If you need a WD Purple 3TB CCTV hard drive for reliable 24/7 recording, the WD30PURX provides surveillance-focused performance in the widely used 3.5-inch SATA format.

Is the WD30PURX designed for CCTV?

Yes. The WD30PURX is a WD Purple surveillance-class hard drive designed specifically for continuous 24/7 security video recording.

How many cameras can the WD Purple WD30PURX support?

This generation of the WD30PURX was designed to support surveillance systems using up to 32 HD cameras.

Can the WD30PURX be used in a DVR or NVR?

Yes. It is designed primarily for compatible DVR and NVR surveillance recording systems.

What is the capacity of the WD30PURX?

The WD30PURX provides 3TB of formatted storage capacity.

Does the WD30PURX have AllFrame technology?

Yes. WD AllFrame technology is designed to reduce frame loss and video interruptions during surveillance recording and playback.

Is WD30PURX compatible with My Cloud EX2 and EX4?

Yes. Western Digital's current compatibility matrix lists the 3TB WD30PURX as supported by both My Cloud EX2 and My Cloud EX4.