WD 2TB SATA

The 2TB Purple 3.5" Surveillance Internal Retail Hard Drive (WD20PURX) from
Western Digital is a 3.5" SATA drive with a data transfer rate of 6 Gb/s that is
designed to withstand the stresses placed on it in a 24/7 surveillance system.
With support for up to 32 high-definition surveillance cameras, this 2TB hard
drive can hold a large amount of data and gives you the ability to easily
upgrade and expand your security system.

A 64MB cache helps to ensure uninterrupted data transfers and the drive's
300,000 load/unload cycles, combined with its 1 million hours MTBF helps ensure
the drive will have a strong operational life. This drive is compatible with
both Windows and Macintosh operating systems and includes mounting screws.

Surveillance-Class Drive

WD Purple surveillance-class storage has been tested to be compatible in a
wide-range of security systems. These drives are designed to replace standard
desktop drives that were not designed for the 24/7 always-on, high-definition
surveillance environment. Desktop drives are built to run for only short
intervals and are not engineered to withstand high-temperature fluctuations and
equipment vibrations found in a typical surveillance application.

Surveillance Storage

The WD Purple Surveillance Hard Drive is designed for high temperature,
always-on, surveillance security systems to ensure reliability and quality video
play back when you need it most.

Improve Performance with AllFrame

This WD Purple Surveillance-class hard drive is equipped with AllFrame
technology which works with ATA streaming to reduce frame loss, improve playback
and increase the number of drive bays supported. AllFrame reduces video
interruptions that commonly occur when desktop hard drives are incorrectly used
as storage in security systems. Missed frames and lost footage can be a problem
when an event occurs and surveillance footage needs to be retrieved. WD Purple
with AllFrame provides the confidence you should expect when it's time to play
back and review critical surveillance footage.

Optimized Performance for Up to 32 Cameras

With support for up to 32 high-definition surveillance cameras, this WD Purple
hard drive gives you the flexibility to upgrade and expand your security system
in the future.

IntelliPower Rotational Speed

In terms of speed, this drive operates using WD's IntelliPower rotational speed.
This means that the rpm speed of the drive depends on the operations being
performed. If the drive is performing mostly sequential reads and writes, its
speed will be increased as compared to if it were performing mostly random mode
operations. This 6TB drive also features a 64MB cache helps ensure uninterrupted
data transfers.