WD42PURZ – WD Purple Surveillance 4TB SATA HDD
WD Purple™ drives are engineered specifically for surveillance to help withstand the
elevated heat fluctuations and equipment vibrations within NVR environments. An
average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on
environment of a high-definition surveillance system. With WD Purple, you get reliable,
surveillance-class storage that’s tested for compatibility in a wide range of security
systems. Exclusive AllFrame™ technology helps reduce frame loss and improve overall
Western Digital’s Exclusive AllFrameTM Technology
All WD Purple™ drives are equipped with AllFrame™ technology, which improves
ATA streaming to help reduce frame loss and improve overall video playback, within a
multitude of security video solutions.
Enhanced Workload Ratings
WD Purple™ drives feature a workload rating of up to 180TB/year⁷ – up to three times
that of desktop drives – to handle the unique demands of mainstream video surveillance
DVR and NVR systems.
Multiple Cameras, Multiple Streams
Modern recorders now support multiple video streams per camera. Select WD Purple™
drives support up to 64 single-stream HD cameras (see specifications table), and can
also support many of the latest cameras that transmit multiple streams to enable basic AI
functionality. With so many options, you have the flexibility to upgrade or expand your
security applications in the future.
Designed for Today’s and Tomorrow’s Surveillance
With an MTBF of up to 1 million hours¹, WD Purple™ drives are engineered for mainstream
surveillance DVRs and NVRs that operate 24/7. With tarnish-resistant components²
and support for more than eight bays², WD Purple drives deliver reliable operation in
surveillance systems even in harsh environments.
Wide Compatibility. Seamless Integration.
WD Purple™ hard drives are built with compatibility in mind, so you can quickly and
seamlessly add capacity to your surveillance system. With a wide range of industryleading enclosures and chipsets supported, you’re sure to find the DVR or NVR
configuration that’s right for you.
Proactive Storage Management with WDDA
Western Digital Device Analytics™ (WDDA) provides a wealth of storage device
parametric operational and diagnostic data to the system; algorithms interpret the data
and direct the system to alert system administrators of specific recommended actions to
address potential issues. WDDA is intended to empower OEMs, system integrators, and
IT professionals to better monitor and proactively manage supported storage devices to
maintain optimal operation.
Three-Year Limited Warranty
As an industry-leading hard drive manufacturer, Western Digital stands behind their
surveillance storage solutions with a 3-year limited warranty included with every WD