WD Purple NV Surveillance 3.5-inch Hard Drives
Purpose Built Storage for NVR Surveillance Systems


WD Purple NV Surveillance 3.5-inch Hard Drives

Western Digital Surveillance Hard Drives
WD Purple NV Hard Drives
WD Purple NV Hard Drive, 6 TB
Internal HD - 6 TB - 3.5 Inch - SATA 6 Gb/s - IntelliPower - 64MB Cache
#WD6NPURX
Get a Quote!
WD Purple NV Hard Drive, 4 TB
Internal HD - 4 TB - 3.5 Inch - SATA 6 Gb/s - IntelliPower - 64MB Cache
#WD4NPURX
Get a Quote!

 

Overview:

WD offers the Power of Choice when it comes to equipping a surveillance system for home or business with the addition of the WD Purple NV hard drive. Designed specifically for NVR digital surveillance systems, the WD Purple NV hard drive adds support for systems with higher drive bay configurations and up to 64 HD cameras. The increased number of video streams and workload capability offered with the WD Purple NV hard drive allows scalability beyond the limitations of DVR systems where only the WD Purple drive is applicable.

NVR vs DVR

NVR vs DVR
WD offers you the Power of Choice when it comes to equipping a surveillance system for your home or business with the addition of WD Purple NV. Designed specifically for scalable network video recorder (NVR) surveillance systems, WD Purple NV adds support for systems with higher drive bay configurations and up to 64 high-definition cameras. The expanded workload capability of WD Purple NV hard drives enables the ability to handle increased video streams, allowing you to scale beyond the limitations of DVR systems where only WD Purple is applicable.

Increased Capabilities

Increased Capabilities
Designed for higher temperatures and always-on surveillance environments, WD Purple NV hard drives expand support for higher hard drive bay configurations, systems utilizing up to 64 high-definition cameras, hardware vibration sensors and greater workloads per year when compared to WD Purple hard drives. Included with the increased support, WD Purple NV is also backwards compatible with DVR systems.

Support for High Camera count Systems

Support for High Camera count Systems
WD Purple NV hard drives are optimized to support systems utilizing high-definition surveillance cameras, giving you the flexibility to upgrade and expand your security system in the future. Higher storage capacities also allow you to store the surveillance footage for a longer period of time, especially in situations when every second counts. The specific number of cameras that can be supported will be dependent on a number of criteria including but not limited to; types and capability of cameras installed (resolution, frames per second, additional features) and the system's hardware and software capability.

WD Purple NVSurveillance storage for peace-of-mind
Whether you’re protecting your personal assets and loved ones or monitoring the business you worked hard to build, you can rely on surveillance-class storage built by one of the largest hard drive manufacturers in the world. WD Purple Surveillance Storage is designed for high temperature, always-on, surveillance security systems to ensure reliability and quality video play back when you need it most. Experience the security of knowing you’re using a surveillance–class drive designed by a leader in the hard drive industry.

Optimized performance with AllFrame
Inherited from WD Purple, WD's exclusive AllFrame technology boosts write performance for WD Purple NV hard drives by working with ATA streaming commands to reduce frame loss and improve streaming playback. AllFrame also reduces video interruptions that commonly occur when desktop hard drives are incorrectly used as storage in security systems, especially in higher video stream count environments where additional data is being captured at an exponential rate. WD Purple NV with AllFrame provides the confidence you should expect when it’s time to play back and review critical surveillance footage in larger surveillance configurations.

The smart choice for surveillance Premium Protection
Designed with tarnish resistant components, WD Purple NV hard drives offer premium protection in harsh environments where surveillance systems are commonly installed including outdoor cabinets where moisture and other natural elements may be present. This increased protection adds reliability to the hard drive over time, especially compared to desktop drives.

Lower power consumption
Low power consumption is crucial in high-temperature always-on surveillance environments. With exclusive IntelliSeek technology, WD Purple NV hard drives calculate the optimum seek speeds which lowers power consumption, noise and vibration that can damage and cause drives to wear out more quickly, increasing reliability.

3-year limited warranty
WD Purple NV hard drives are backed by an impressive 3-year limited warranty (worldwide) giving you peace of mind that your precious surveillance footage is secure no matter where you are in the world.

The WD Advantage

WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. This testing ensures our products consistently meet the highest quality and reliability standards of the WD brand. WD also has a detailed Knowledge Base with more than 1,000 helpful articles as well as helpful software and utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.

Features:

Optimized Performance with AllFrame
Inherited from WD Purple, WD’s exclusive AllFrame technology boosts write performance for WD Purple NV hard drives by working with ATA streaming commands to reduce frame loss and improve streaming playback. AllFrame also reduces video interruptions that commonly occur when desktop hard drives are incorrectly used as storage in security systems, especially in higher video stream count environments where additional data is being captured at an exponential rate. WD Purple NV with AllFrame provides the confidence you should expect when it’s time to play back and review critical surveillance footage in larger surveillance configurations.

Increased Capabilities
Designed for higher temperatures and always-on surveillance environments, WD Purple NV hard drives expand support for higher hard drive bay configurations, systems utilizing up to 64 high-definition cameras, hardware vibration sensors and greater workloads per year when compared to WD Purple hard drives. Included with the increased support, WD Purple NV is also backwards compatible with DVR systems.

Support for High Camera count Systems
WD Purple NV hard drives are optimized to support systems utilizing high-definition surveillance cameras, giving you the flexibility to upgrade and expand your security system in the future. Higher storage capacities also allow you to store the surveillance footage for a longer period of time, especially in situations when every second counts. The specific number of cameras that can be supported will be dependent on a number of criteria including but not limited to; types and capability of cameras installed (resolution, frames per second, additional features) and the system’s hardware and software capability.

Premium Protection
Designed with tarnish resistant components, WD Purple NV hard drives offer premium protection in harsh environments where surveillance systems are commonly installed including outdoor cabinets where moisture and other natural elements may be present. This increased protection adds reliability to the hard drive over time, especially compared to desktop drives.

Lower Power Consumption
Low power consumption is crucial in high-temperature always-on surveillance environments. With exclusive IntelliSeek™ technology, WD Purple NV hard drives calculate the optimum seek speeds which lowers power consumption, noise and vibration that can damage and cause drives to wear out more quickly, increasing reliability.

3-year limited warranty (worldwide)
WD Purple NV hard drives are backed by an impressive 3-year limited warranty (worldwide) giving you peace of mind that your precious surveillance footage is secure no matter where you are in the world.

Specifications:

Examples of the number of photos, songs, videos and any other files that can be stored on a hard drive are provided for illustrative purposes only. Your results will vary based on file size and format, settings, features, software and other factors.

Photo: Figures represent the average number of photos taken with a 6 megapixel camera in high-resolution JPEG mode with an average file size of 3.5 MB per photo. The actual number of images will vary by camera model and compression setting.

Hours: The DV format, regardless of its mode (miniDV, DVCAM, DVC-Pro) has a data rate of approximately 25mb/s (mega-bits per second). In storage terms, this translates to approximately 3.5MB/s (Megabytes per second) or 13GB/hr (Gigabytes per hour)

Song: Music capacity is based on 4 minutes per song. MP3 capacity is based on 128 Kbps bit rate and 11:1 audio compression ratio. Uncompressed CD quality is based on 1:1 audio compression ratio.

WD Purple Dimensions

What It Holds

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.

Drive Size 6 TB 4 TB
Specifications
Model Number1 WD6NPURX WD4NPURX
Interface SATA 6 Gb/s SATA 6 Gb/s
Formatted Capacity2 6 TB 4 TB
Form factor 3.5-inch 3.5-inch
Advanced Format (AF) Yes Yes
RoHS Compliant3 Yes Yes
Performance
Data transfer rate (max)
Buffer to host
host to/from drive (sustained)

6 Gb/s
171 MB/s

6 Gb/s
150 MB/s
Cache (MB) 64 64
Rotational Speed (RPM) IntelliPower IntelliPower
Reliability/Data Integrity
Load/unload cycles4 300,000
Non-recoverable read errors per bits read <1 in 1014
Limited warranty (years)5 3
Power Management
Average power requirements (W) Read/Write: 5.90
Idle: 4.90
Standby: 0.40
Sleep: 0.40
Read/Write: 4.80
Idle: 4.83
Standby: 0.52
Sleep: 0.52
Environmental Specifications6
Operating Temperature 0 to 65° C
Non-operating Temperature -40 to 70° C
Shock (Gs)
Operating (2 ms, read/write) 30 30
Operating (2 ms, read) 65 65
Non-operating (2 ms) 250 250
Average acoustics (dBA)7
Idle mode 25 25
Performance seek mode 26 26
Physical Dimensions
Height (in./mm, max) 1.028/26.1
Length (in./mm, max) 5.787/147
Width (in./mm, ± .01 in.) 4/101.6
Weight (lb./kg, ± 10%) 1.58/0.72 1.50/0.68

1 Not all products may be available in all regions of the world.
2 As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATAIO organization as of the date of this specification sheet. Visit www.sata-io.org for details.
3 WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.
4 Controlled unload at ambient condition
5 The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details
6 No non-recoverable errors during operating tests or after non-operating tests.
7 Sound power level.

WD Surveillance Storage:

WD Surveillance StorageSafety and security are always a concern. Governments, corporations and even individuals must protect themselves and their assets. One of the most popular methods employed to enhance security and safety is with video – one of the most storage-intensive fi le formats around. As the affordability of high-defi nition surveillance cameras has declined and their widespread use has been adopted, the demand for reliable and scalable storage has skyrocketed. As a result - according to IHS - the market for enterprise storage solutions in security is forecasted to grow by a 14.8% compound annual growth rate (CAGR) over the next fi ve years.1 As evidenced by the data, increased presence and enhanced requirements of modern surveillance systems, there is a pressing need for specialized hard drives that offer more storage capacity and advanced features designed specifi cally for DVRs, NVRs, CCTV, IPTV and other surveillance mediums.

Surveillance storage for peace-of-mind

As a worldwide storage leader, WD strives to design drives to exceed the demanding requirements of digital video surveillance. With design, development, manufacturing and industry-leading customer support services, WD’s surveillance partners receive best-in-class products with innovative feature sets, ensuring that digital video surveillance systems equipped with WD drives are optimized for maximum performance. Whether you’re protecting your personal assets and loved ones or monitoring the business you worked hard to build, you can rely on surveillance storage built by one of the largest hard drive manufacturers in the world. WD surveillance hard drives are designed for high temperature, always-on, surveillance security systems to ensure reliability and quality video playback when you need it most.

WD gives you the security you want at the scale you need

Standard desktop hard drives are designed to operate approximately eight hours a day for five days per week. Consider now that a DVR or high-end surveillance system typically runs 24 hours per day, for seven days per week recording numerous simultaneous video streams. What’s needed for applications like these is another type of drive, a WD surveillance drive.

WD has designed a storage lineup perfect for digital video surveillance and its many unique environments and application sets. WD’s surveillance drives enable DVR, NVR, CCTV, IPTV and other digital video surveillance systems. These purpose-built drives deliver a comprehensive range of features and capabilities such as high-resolution image quality, streaming video from multiple high-definition cameras, video archiving with ultra-fast data access and on-demand video playback.

Regardless of the surveillance environment, whether it’s banking, casino, retail, commercial, residential, corporate, government or law enforcement, WD surveillance drives deliver the performance, capacity and reliability that surveillance applications require.

Desktop Drive Limitations

  • Not designed for 24/7 surveillance environments
  • No RAID support with error recovery controls
  • Suboptimal power efficiency
  • Not designed or tested for surveillance environments
  • Potential integration and upgradability difficulties
  • Minimal or no power backup in the event of power loss

Surveillance Hard Drive Benefits

  • Built for 24/7 surveillance environments
  • Supports multiple bays and multiple camera streams
  • Engineered for compatibility in wide range of surveillance systems
  • Enables upgrades & expansion of existing surveillance systems
  • Lower power consumption

Understanding today’s surveillance market

The surveillance market is splitting into two primary types of systems; DVR – primarily analog systems that have cameras directly connected to the system, and NVR – digital systems that have cameras connected via IP (internet protocol). Due to the fact that DVRs have a finite number of cameras that can be physically attached, the number of streams and maximum workload on the hard drives can be determined. Since NVRs theoretically can have an unlimited number of cameras attached to the system, the number of streams, workload on the hard drive, and the system’s retention period can scale beyond that of a DVR.*

*There are limitations, primarily tied to system capability, so NVRs are not infinitely scalable.

Choosing the right surveillance-class drive

WD offers a complete line of surveillance-class storage designed for home, small to medium business or mission critical security systems. These hard drives are engineered to support the rigorous 24/7, always-on, high-definition video requirement set unique to surveillance security systems. Choose a hard drive that is designed and engineered for surveillance systems and enjoy the peace-of-mind you can only get from surveillance-class storage.

  WD Purple WD Purple NV WD Re
  WD Purple WD Purple NV WD Re
Summary Balanced reliability, performance and cost storage. Purpose built storage for NVR Surveillance systems. Maximum reliability and performance storage for large business and mission critical surveillance.
Form Factor & Capacity 3.5-inch: 1 TB - 6 TB 3.5-inch: 4 TB & 6 TB 3.5-inch: 250 GB - 6 TB
Application Mainstream Surveillance Mid-range and Small-Med Business Surveillance High-end and Mission Critical Surveillance
Usage Environment Residential / SMB / Retail / Commercial Residential / SMB / Retail / Commercial Retail / Commercial / Banking / Casino / Corporate / Government / Law Enforcement
Advantages
  • Built for 24/7 surveillance environments
  • Engineered for compatibility in a wide range of surveillance systems
  • Improved performance with AllFrame Technology
  • Low power & quiet operation
  • Enables upgrades & expansion of existing surveillance systems
  • Designed specifically for NVR surveillance systems (and backwards compatibile with DVR systems)
  • Support for greater than 8 NVR surveillance bays with up to 64 HD camera count
  • Increased workload capabilities (TB/year) with optimized power consumption
  • Available in 4 TB & 6 TB capacities
  • Designed with tarnish resistant components for premium protection in harsh environments
  • Designed for heavy application workloads
  • StableTrac and RAFF for enhanced vibration tolerance
  • Optional Self-encrypting Drive (SED) models
  • 24x7x365 reliability
Number of Drive Bays 1 to 8 Bays ≥ 8 Bays (No Limit)* ≥ 8 Bays (No Limit)
Number of Cameras 1 to 32 Cameras 1 to 64 Cameras No Limit
Power on Hours 24/7 24/7 24/7
RAID Support Yes Yes Yes
Limited Warranty 3-Year 3-Year 5-Year

* The specific number of cameras and hard drive bays that can be supported will be dependent on a number of criteria including but not limited to: types and capability of cameras installed (resolution, frames per second, additional features) and the system’s hardware and software capability

Estimated Capacity

There are an infinite number of different combinations of camera resolutions, live cameras, frames per second, and archive settings. WD understands the uniqueness of each combination and offers a full line of capacity products and points to fulfill the complex needs surveillance systems present.

Estimated Capacity Requirements, in TB based on follow system set up:
Standard Definition Camera Resolution: 0.3 megapixesl (640 x 480)
30 frames per second
Compression: H.264

WD Color

0.3 megapixesl (640 x 480) Estimated Capacity Chart

Estimated Capacity Requirements, in TB based on follow system set up:
High Definition Camera Resolution: 2.1 megapixels or 1080p (1920x1080)
30 frames per second
Compression: H.264

WD Color

2.1 megapixels or 1080p (1920x1080) Estimated Capacity Chart

Lower temperature means greater reliability

In addition to high levels of clarity, long-term reliability and low-power consumption are equally critical to surveillance systems. Designed for 24/7 operation, WD surveillance-class drives consume less power during spin-up and operation, minimize heat dissipation and vibration, and operate reliably without compromising performance. Reducing heat, noise, and vibration enables surveillance applications to operate more reliably over longer periods of time.

Thermal images taken at the WD labs demonstrate how much cooler WD drives are when compared to the competitors' standard 7200 RPM hard drives.

Thermal images taken at the WD labs demonstrate

When a drive operates at a lower temperature its lifespan increases.

In addition to high levels of clarity, long-term reliability and low-power consumption are equally critical to surveillance systems. Designed for 24x7 operation, WD drives with WD GreenPower Technology™ consume less power during spin-up and operation, minimize heat dissipation and vibration, and operate reliably without compromising performance. Reducing heat, noise, and vibration enables surveillance applications to operate more reliably over longer periods of time.

When a drive operates at a lower temperature its lifespan increases.

Annual Failure Rate vs. Hard Drive Base Casting Temp
Annual Failure Rate vs. Hard Drive Base Casting Temp

The illustration below demonstrates the annual failure rate and how it correlates to the hard drive base casting temperature and power on hours (POH). Failure rates significantly increase as temperature rises. In a system operating 24x7 the impact is substantial.

The evolution of of surveillance

Safety and security are always a concern. Governments, corporations, and even individuals must protect themselves and their assets. One of the most popular methods employed to enhance security and safety is digital video surveillance. With increased presence and enhanced requirements of modern surveillance systems, there is a pressing need for specialized hard drives with more storage capacity and advanced features designed specifically for SDVRs, CCTV, IPTV and other surveillance mediums. As a worldwide storage leader, WD continually strives to design drives to exceed the demanding requirements of digital video surveillance. With design, development, manufacturing, and industry-leading customer support services, WD's surveillance partners receive best-in-class products with innovative feature sets, ensuring that digital video surveillance systems equipped with WD drives are optimized for maximum performance.

Surveillance storage for peace-of-mind

Whether you're protecting your personal assets and loved ones or monitoring the business you worked hard to build, you can rely on surveillance-class storage built by one of the largest hard drive manufacturers in the world. WD Purple surveillance hard drives are designed for high temperature, always-on, surveillance security systems to ensure reliability and quality video play back when you need it most. Experience the security of knowing you're using a surveillance-class drive designed by a leader in the storage industry.

Drive Views:

Bottom View
Bottom View
Top Angle View
Top Angle View

Right Angle View
Right Angle View
Cover View
Cover View

Documentation:

Download the WD Purple NV Surveillance Specsheet (PDF).