Western Digital Purple 4.0TB 3.5 inch SATA3 6.0Gbps Surveillance Hard Disk

Western Digital Purple 4.0TB 3.5" SATA3 6.0Gbps Surveillance Hard Disk Drive, Intellipower speed management, 256MB Cache, AllFrame, HD Video optimised, CMR recording technology, Up to 64 HD cameras supported, 175MB/s Host to / from Drive (Sustained)

Features:

Uncompromising Storage with a WD Purple Surveillance Hard Drive
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 thats tested for compatibility in a wide range of security systems, and some of our latest models (WD22PURZ, WD42PURZ, and WD63PURZ) have improved power efficiency. Exclusive AllFrame technology helps reduce frame loss and improve overall video playback.

Industry-Leading Storage. Surveillance You Can Trust.
Western Digital is a worldwide leader in the hard drive industry. With WD Purple surveillance storage, you have a drive engineered for high temperature, always-on surveillance systems so you can rely on quality video playback when you need it most. Whether youre protecting loved ones or monitoring your business, WD Purple offers performance you can trust.

Western Digital's Exclusive AllFrame 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/year - 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. WD Purple drives support up to 64 single-stream HD cameras (6TB and above), 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 hours, WD Purple drives are engineered for mainstream surveillance DVRs and NVRs that operate 24/7 . With tarnish-resistant components and support for more than eight bays, WD Purple drives deliver reliable operation 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, youre sure to find the DVR or NVR configuration thats 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.

Specifications:

Model Number WD42PURZ
Formatted capacity 4TB
Form factor 3.5-inch
Advanced Format (AF) Yes
Recording Technology CMR
RoHS compliant Yes
Product Features
Cameras supported Up to 64 HD
Drive Bays Supported 16
Al Streams --
Firmware Feature Name AllFrame
Tarnish resistant components Yes
Performance - Interface transfer rate (max)
Buffer to host 6 Gb/s
Host to/from drive (sustained) 175MB/s
Cache (MB) 256
Reliability/Data Integrity
Load/unload cycles 300000
Annualized workload rating 180TB/yr
Non-recoverable read errors per bits read <1 in 10^14
MTBF 1000000
Limited warranty (years) 3
Power Management - Average power requirements (W)
Read/Write 4.6
Idle 3.7
Standby and Sleep 0.3
Environmental Specifications Temperature (°C, on the base casting)
Operating 0 to 65
Non-operating -40 to 70
Shock (Gs)
Operating (2 ms, read/write) 30
Operating (2 ms, read) 65
Non-operating (2 ms) 250
Acoustics (dBA)
Idle 23
Seek (average) 27
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%) 1.26/0.57