The 4TB Purple SATA III 3.5" Internal Surveillance Hard Drive from WD is designed to withstand the stresses placed on it in a 24/7, always-on, high-definition surveillance system with 16 drive bays. With support for up to 64 high-definition surveillance cameras, this 4TB hard drive can hold a large amount of data and gives you the ability to easily upgrade and expand your security system. Furthermore, WD AllFrame technology helps improve video capturing and reduces errors, pixilation, and video interruptions that could happen in a video recorder system.

A SATA III 6 Gb/s interface, sustained data transfer speeds of up to 180 MB/s, and a 256MB cache all help to ensure uninterrupted data transfers. Furthermore, the drive's 300,000 load/unload cycles, annualized workload rating of 180TB per year, MTBF rating of 1 million hours, and <1 in 10¹⁴ non-recoverable read errors per bit read also help to ensure a strong operational life.

4TB Storage Capacity    3.5" Form Factor    SATA III 6 Gb/s Interface    256MB Cache    Up to 180 MB/s Sustained Data Transfers    300,000 Load/Unload Cycles    180TB per Year Workload Rating    Designed for 24/7 Surveillance    Supports up to 64 HD Cameras    WD AllFrame Technology

• 4TB storage capacity
• Engineered for mainstream surveillance systems
• WD AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications
• Supports a workload rate of up to 180 TB per year
• Support for up to 16 bays
• Tarnish-resistant components
• Limited 3-year limited warranty

Western Digital has provided surveillance-grade storage for more than a decade. With WD Purple surveillance storage, drives are engineered for high temperature, always-on surveillance systems so you can rely on quality video when you need it most. WD Purple delivers smart video storage that you can trust and are backed by a limited 3-year warranty.

All WD Purple drives are equipped with AllFrame technology, which helps reduce video frame drops and improves video recording and playback.

WD Purple drives feature a workload rating of up to 180TB per year, which is up to three times that of desktop drives, to handle the unique demands of mainstream video surveillance DVR and NVR systems.

Modern recorders now support multiple video streams per camera. WD Purple drives support up to 64 single-stream HD cameras. With so many options, you have the flexibility to upgrade or expand your security applications in the future.

Engineered for reliability with an MTBF of up to 1 million hours and backed with a limited 3-year warranty, WD Purple drives feature tarnish-resistant components and support for storage systems with up to 16 drive bays. WD Purple hard drives are designed with RAID error recovery control to help reduce failures in supported video recorders.

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.

Western Digital stands behind their surveillance storage solutions with a limited 3-year warranty included with every WD Purple drive.

Related Questions and Answers

Q: 1. Does this drive come with a sata cable and mounting screws?

A: sorry, I purchased the NVR and drives & the cable / screws were included.....

Q: 2. what is the length of the warrantee?:

A: This product has a three year, limited manufacturer's warranty.

Q: 3. Are these already formatted for dvr?

A: Yes, mine came formatted. Just plugged it into my NVR and it started recording immediately.

Q: 4. what is the product warranty?

A: This WD 8TB Purple Pro 7200 rpm SATA III 3.5" Internal Surveillance Hard Drive (OEM) has a limited 5 year manufacturer warranty.

Q: 5. Is the WD10PURZ a CMR HDD?

A: The WD 1TB Purple 5400 rpm SATA III 3.5" Internal Surveillance Hard Drive (OEM) BH #WEWD10PURZ is CMR.

Q: 6. is this drive compatable with hikvision 4k nvr?

A: Yes the wd purple drives are recommended for use by Hikvision

Q: 7. Does this work with Unifi UNVR or UNVR Pro?

A: Yes. The WD 8TB Purple Pro 7200 rpm SATA III 3.5" Internal Surveillance Hard Drive (OEM) BH #WEWD8001PURP will work with both the Ubiquiti Networks UNVR UniFi Protect NVR BH #UBUNVR and the Ubiquiti Networks UNVR-PRO UniFi Protect NVR Pro (No HDD) B&H # UBUNVRPRO.

Q: 8. Are these wd 6tb purple, new in a sealed unopened box? This info is not indicated in specs or gen description.

A: This is a brand new, unopened product. It come sealed in an anti-static bag, bubble wrapped in an individual plain brown box

Q: 9. Can I put in a home desktop PC? Is it PnP or needs to be re-formated? Is it compatible with Windows 10?

A: Yes, it is for home desktop, it is compatible with Windows 10. It does not come formatted.

Q: 10. Can this HD be used in a NLE that requires 7200rpm? Looking to add video storage to my Edius 7.4 system. Also any special formatting required in windows 7 PC?

A: The WD Purple drives would not be suitable for a video editing system that requires a 7200 RPM or faster drive.