WD Purple WD85PURZ 8TB 3.5" Internal SATA Surveillance Hard Drive — CMR

WD Purple WD85PURZ is purpose-built for continuous security camera recording and multi-stream video workloads. This 8 TB, 3.5-inch internal hard drive uses Conventional Magnetic Recording (CMR) and a SATA 6 Gb/s interface to deliver dependable, long-lasting storage for modern 24x7 surveillance systems. Designed to operate in demanding NVR and DVR environments, it provides the reliability, capacity, and performance needed to preserve high-quality footage across busy facilities, from small offices to larger storefronts and campuses.

• Designed for 24x7 surveillance and continuous writing from multiple cameras, the WD85PURZ is engineered to sustain high write throughput and real-time video capture. It maintains consistent performance as camera counts rise and retention periods extend, helping to prevent gaps in footage even during peak activity or when large numbers of streams are being recorded simultaneously.
• AllFrame technology reduces video interruptions by optimizing the way video frames are captured, stored, and read back. This feature minimizes frame loss, prevents video hiccups, and improves playback integrity in surveillance setups where every frame matters for accurate monitoring, incident review, and evidence gathering.
• With 8 TB of capacity, this drive delivers ample space for weeks or months of high-definition video, depending on camera resolution, frame rate, and retention policy. It enables longer retention policies, rapid archival access, and easier scaling for growing security deployments without frequent reordering of storage or disruptive maintenance windows.
• 3.5-inch internal form factor paired with SATA 6 Gb/s (SATA III) delivers reliable, scalable performance for surveillance systems. The Conventional Magnetic Recording (CMR) technology provides predictable random write performance and sustained sequential throughput, which translates into smoother camera rollouts, fewer dropped frames, and reliable throughput during long recording sessions.
• Built to withstand the heat fluctuations and equipment vibrations found in NVR environments, WD Purple drives are engineered for continuous operation. They are optimized for the demands of surveillance workloads, including 24x7 recording, constant video streaming, and busy retrieval cycles, helping you maintain uptime, protect footage integrity, and reduce replacement costs over the life of your surveillance installation.

Technical Details of WD85PURZ

• Capacity: 8 TB
• Form Factor: 3.5-inch internal drive
• Interface: SATA 6 Gb/s (SATA III)
• Recording Method: Conventional Magnetic Recording (CMR)
• Rotation Speed: 5400 RPM
• Cache: 256 MB
• Surveillance Features: AllFrame technology for reduced frame loss
• Designed For: 24x7 surveillance operations in NVR/DVR environments
• Reliability Focus: Built to endure continuous write workloads and sustained operation in challenging installation settings

How to install WD85PURZ

• Power down your system and unplug it from the mains, then open the chassis to access available drive bays.
• Mount the WD85PURZ in a 3.5-inch drive bay using the appropriate screws or mounting hardware, ensuring the drive is securely seated and aligned with the backplane or motherboard.
• Connect the SATA data cable and the SATA power cable from your motherboard or power supply to the drive connectors, confirming firm and full engagement of both cables.
• Power on the system and enter your operating system or NVR’s disk management utility to initialize and format the new drive as required by your setup. If your surveillance system handles formatting automatically, follow the on-screen prompts within the NVR interface.
• Configure the drive as part of your storage pool or camera recording plan, selecting the WD85PURZ as the destination for continuous recording, expansion storage, or archival retention within your surveillance environment.

Frequently asked questions

• Q: Is WD Purple WD85PURZ suitable for 24x7 surveillance deployments? A: Yes. The drive is designed specifically for continuous operation, with firmware and features that support multi-camera recording, high write workloads, and long retention policies typical of surveillance setups.
• Q: What is AllFrame technology and why is it important? A: AllFrame technology helps reduce video interruptions by optimizing how streams are recorded and written to disk, which lowers frame loss and improves playback quality in systems with many cameras and high data throughput.
• Q: How many cameras can this drive support? A: WD Purple drives are designed to work with up to 64 cameras in a single system, though actual performance depends on camera bitrates, resolution, frame rates, and the overall capacity of the surveillance server or NVR.
• Q: What file system and formatting considerations should I know? A: In most NVR setups, the system manages formatting automatically. If you use a PC or server, format the drive with a file system supported by your OS and surveillance software, and ensure the volume is optimized for sequential write workloads typical of video storage.
• Q: Is this drive suitable for workloads outside surveillance? A: While WD Purple WD85PURZ is tuned for surveillance workloads, it can be used for other high-write, streaming applications. However, its firmware and features are optimized for continuous video recording rather than general consumer PC tasks or mixed workloads.