I need one or two or maybe three of these drives for my surveillance systems. WD has just announced the WD Purple hard drive line specifically made for surveillance uses that are optimized for HD video playback and 24/7 usage. The drives are available in capacities from 1tb up to 4tb with prices varying from $90 up to $200 depending on sizes. More details below..

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WD, a Western Digital company and storage industry leader, today announced the availability of WD Purple, a purpose-built line of 3.5-inch, high-capacity hard drives for surveillance applications. Designed specifically for video surveillance units, WD Purple hard drives excel in new and existing home and small business security environments with up to eight hard drives and up to 32 high-definition (HD) video cameras. Shipping today, WD Purple hard drives are available in capacities from 1 TB up to 4 TB.

Optimized to withstand the demands of always-on digital PVR, DVR and NVR recording environments, WD Purple hard drives offer low power consumption and many advanced performance features typically reserved for enterprise-level storage.

Features
WD Purple hard drives are equipped with an array of exclusive WD technologies, including:

AllFrame - When combined with ATA streaming support, AllFrame technology helps to reduce video footage loss with a proprietary cache policy management technology to help improve data flow and playback. WD Purple includes exclusive firmware upgrades that protect against video pixilation and interruptions within a surveillance system

Advanced Format Technology (AFT) – the more efficient media format that enables increased areal densities, adopted by WD and other drive manufacturers to continue growing hard drive capacities

Engineered for Compatibility
Built for easy integration into new or existing video surveillance systems, WD Purple hard drives are designed and tested to surveillance-class standards and are compatible with industry-leading chassis and chip-sets. Without a current industry standard, WD worked closely with surveillance partners to develop a proprietary benchmark to define and demonstrate performance in surveillance systems. Tests of WD Purple hard drives indicate superior performance to competitive surveillance-class brands of storage, especially as cameras, channel count and workloads increase. A special Compatibility Selector is available to assist customers with surveillance drive selection at:http://www.wd.com/en/products/products.aspx?id=1210.

Price and Availability
Shipping now through select distributors and resellers, WD Purple surveillance-class hard drives are available in capacities from 1 TB up to 4 TB and covered by a three-year limited warranty. MSRP for the 3.5-inch 1 TB drive, model #: (WD10PURX) is $89.99; the 2 TB drive, model #: (WD20PURX) is $119.99; the 3 TB drive, model #: (WD30PURX) is $159.99 and the 4 TB drive, model #: (WD40PURX) is $199.99 USD. Additional information about WD Purple hard drives and limited warranty terms may be found on the company website at http://products.wd.com/wdpurple.