WD Purple 6TB WD60PURZ Surveillance Hard Drive: specs and who it suits

The WD Purple 6TB (WD60PURZ) is an internal 3.5-inch hard drive made for security recording systems. Western Digital designed the Purple range for always-on, high-definition surveillance, in digital video recorders (DVRs) and network video recorders (NVRs) that write video all day, every day. It is a replacement or expansion drive, not an external one.

Why surveillance drives are different

A desktop hard drive is typically used for a few hours a day with mixed reads and writes. A recorder works differently: it writes several video streams continuously and only occasionally reads them back. Western Digital describes the WD Purple as built for 24/7 operation, with an enhanced workload specification that supports systems designed for 24x7 recording.

This is why surveillance drives are often chosen over general-purpose ones for security systems, where gaps in recording are a problem.

What AllFrame technology does

AllFrame is Western Digital's name for firmware tuning that, according to the company, improves video capture and helps reduce errors, pixelation and video interruptions in a recorder. In practice, it aims to keep recording smooth when a drive is handling many streams at once.

How many cameras it can support

Western Digital says the drive is designed to support systems with up to 64 high-definition cameras. That is a design target for the drive, not a promise about your setup. The number a real system can record depends on the recorder, camera resolution, bitrate and the number of drives installed.

Capacity and specifications

• Capacity: 6TB, where 1TB is typically counted as one trillion bytes, so the usable figure is lower.
• Interface: SATA 6 Gb/s.
• Cache: 64 MB.
• Rotation speed: the listing's description states 7200 rpm.
• Form factor: 3.5 inch, with listed dimensions of about 5.8 x 4.0 x 1.0 in and a weight of 1.4 lb.

As a rough guide, how many days of footage 6TB holds depends on the number of cameras, resolution, frame rate and compression, so the recorder's own calculator or manual is the best way to estimate it.

Compatibility

The listing describes the drive as designed for both DVR and NVR systems and compatible with many leading surveillance and security manufacturers. Because recorders differ, check the recorder's list of supported drives and its maximum capacity per bay.

Warranty

Western Digital provides a three-year manufacturer's limited warranty.

Who it suits

It suits home and small-business owners expanding or replacing storage in a camera recorder, and installers building a recording system. It isn't designed for general desktop storage or for network storage in NAS enclosures, where drives built for that use are typically specified instead.

What to check before you buy

• Recorder support: confirm the recorder accepts 6TB drives and a 3.5-inch SATA drive.
• Bay space: check that there is a free bay and a SATA data and power connection.
• Camera load: compare the total bitrate of your cameras with the drive and recorder limits.
• Retention: estimate how many days you want to keep, and size capacity accordingly.
• Installation: follow the recorder's manual when fitting the drive and handle the drive with care.
• Backups: if footage is important, consider off-device copies.

The short version

• 6TB, 3.5-inch, SATA 6 Gb/s hard drive with a 64 MB cache.
• Built for 24/7 recording in DVR and NVR systems.
• AllFrame technology to reduce errors and interruptions in video capture.
• Designed to support up to 64 HD cameras, according to Western Digital.
• Three-year limited warranty; check recorder compatibility first.

Bloiq is reader-supported. Some links may earn us a commission; it never affects what we write. How we make money.