WD Purple™ Pro Smart Video Hard Drive
Purpose-built storage for your smart video
solution

The WD Purple™ Pro HDD, with OptiNAND™ technology in 22TB1
, delivers big capacity
in an enterprise-class drive for video analytics servers, AI, and deep learning systems to
enable data-driven outcomes.

Western Digital’s exclusive AllFrame™ AI
technology

AllFrame AI technology supports up to 32 AI streams for deep learning analytics within
the system while reducing frame drops.

Multiple cameras, multiple streams

WD Purple™ Pro drives are optimized to handle up to 64 single-stream HD cameras2
in
addition to 32 concurrent AI streams. This flexibility allows you to easily upgrade and
scale your smart video solution to meet your changing needs.

Advanced workload capability for advanced
systems

These reliable drives are built with a workload rating up to 550TB/year3
to keep up with
the 24/7 data capture and analysis demands of advanced AI-enabled recorders, video
analytics applicances, and deep learning analytics servers.

Designed for reliable operation

Engineered with an MTBF of up to 2.5 million hours4
and backed with a 5-year limited
warranty, the WD Purple™ Pro HDD also features tarnish-resistant components and full
multi-bay support for dependable operation in large-scale surveillance systems.

Proactive storage management with WDDA™

Western Digital Device Analytics™ (WDDA) provides drive health management features
for compatible recorders and video management systems.

Download Data sheet here.

WD Purple™ Pro Smart Video Hard Drive

Purpose-built storage for your smart video
solution

The WD Purple™ Pro HDD, with OptiNAND™ technology in 22TB1
, delivers big capacity
in an enterprise-class drive for video analytics servers, AI, and deep learning systems to
enable data-driven outcomes.

Western Digital’s exclusive AllFrame™ AI
technology

AllFrame AI technology supports up to 32 AI streams for deep learning analytics within
the system while reducing frame drops.

Multiple cameras, multiple streams

WD Purple™ Pro drives are optimized to handle up to 64 single-stream HD cameras2
in
addition to 32 concurrent AI streams. This flexibility allows you to easily upgrade and
scale your smart video solution to meet your changing needs.

Advanced workload capability for advanced
systems

These reliable drives are built with a workload rating up to 550TB/year3
to keep up with
the 24/7 data capture and analysis demands of advanced AI-enabled recorders, video
analytics applicances, and deep learning analytics servers.

Designed for reliable operation

Engineered with an MTBF of up to 2.5 million hours4
and backed with a 5-year limited
warranty, the WD Purple™ Pro HDD also features tarnish-resistant components and full
multi-bay support for dependable operation in large-scale surveillance systems.

Proactive storage management with WDDA™

Western Digital Device Analytics™ (WDDA) provides drive health management features
for compatible recorders and video management systems.

Download Datasheet here.

WD Purple™

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
video playback.

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
Solutions

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
Purple™ drive.

Download Datasheet here.

WD Purple™

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
video playback.

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
Solutions

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
Purple™ drive.

Download Datasheet here.

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
the 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
video playback.

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
Solutions

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 industry leading 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
Purple™ drive.

Download datasheet here.

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
video playback.

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
Solutions

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 industry leading 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
Purple™ drive.

Download Data sheet here.

DATASHEET

DATASHEET

Experience full HD 1080P/ HD 720P video with the simplicity of using existing cabling infrastructure. The Lite series features a compact design and high-quality image at a friendly price. It offers various varifocal/fixed lens models with multi-language OSD and HD/SD switchable output. The structure flexibility and best cost-performance make the lite series camera an ideal choice for SMB solutions.
Functions
4 Signals over 1 Coaxial Cable
HDCVI technology supports 4 signals to be transmitted over 1 coaxial cable simultaneously, i.e. video, audio*, data, and power. Dual-way data transmission allows the HDCVI camera to interact with the HCVR, such as sending a control signal or triggering the alarm. Moreover, HDCVI technology supports PoC for construction flexibility. * Audio input is available for some models of HDCVI cameras.

Long Distance Transmission 
HDCVI technology guarantees real-time transmission at long distances without any loss. It supports up to 800m(1080P)/1200m(720P) transmission via coaxial cable, and up to 300m(1080P)/450m(720P) via UTP cable.* *Actual results verified by real-scene testing in Dahua’s test laboratory.

Simplicity

HDCVI technology inherits the born feature of simplicity from traditional analog surveillance systems, making itself the best choice for investment protection. HDCVI system can seamlessly upgrade the traditional analog system without replacing existing coaxial cabling. The plug-and-play approach enables full HD video surveillance without the hassle of configuring a network.

Smart IR

The camera is designed with microcrystalline LED IR illumination for best lowlight performance. Smart IR is a technology to ensure brightness uniformity in B/W images under low illumination. Dahua’s unique Smart IR adjusts to the intensity of the camera’s infrared LEDs to compensate for the distance of an object and prevents IR LEDs from overexposing images as the object comes closer to the camera. Multi-formats The camera supports multiple video formats including HDCVI, CVBS, and other two common HD analog formats in the market. The four formats can be switched over through the OSD menu or by PFM820(UTC controller). This feature makes the camera to be compatible with not only HCVRs but also most end users’ existing HD/SD DVRs.
Multi-language OSD

OSD menu provides multiple image adjustments and function settings to meet the requirements of different monitoring scenes. The OSD menu includes configurations such as backlight mode, day/night, white balance, privacy mask, and motion detection. The camera supports 11 languages for the OSD menu, namely, Chinese, English, French, German, Spanish, Portuguese, Italian, Japanese, Korean, Russian and Polish.

Protection 
The camera’s outstanding reliability is unsurpassed due to its rugged design. The camera is protected against water and dust with IP67 ranking, making it suitable for indoor or outdoor environments. With a working temperature range of -40 °C to +60 °C (-40 °F to +140 °F), the camera is designed for extreme temperature environments. Supporting ±25% input voltage tolerance, this camera suits even the most unstable power supply conditions. Its 4KV lightning rating provides protection against the camera and its structure from the effects of lightning.

* The parameters and datasheets below can only be applied to the A51-S2 series

> Max. 25 fps@5MP (16:9 video output)

> CVI/CVBS/AHD/TVI switchable

> 3.6 mm fixed lens (2.8 mm optional)

> Max. IR length 20 m, Smart IR

IP67, DC12V

DATASHEET

RG-59 is a specific type of coaxial cable, often used for low-power video and RF signal connections. The cable has a characteristic impedance of 75 ohms. The 75-ohm impedance matches a dipole antenna in free space. RG (for radio guide) was originally a unit indicator for bulk radio frequency (RF) cable in the U.S. military’s Joint Electronics Type Designation System. The suffix /U means general utility use. The number 59 was assigned sequentially. The RG unit indicator is no longer part of the JETDS system (MIL-STD-196E) and cable sold today under the RG-59 label does not necessarily meet military specifications.

RG-59 is a specific type of coaxial cable, often used for low-power video and RF signal connections. The cable has a characteristic impedance of 75 ohms. The 75-ohm impedance matches a dipole antenna in free space.

DATASHEET