Seagate, WD Announce Latest Surveillence HDDs

Western Digital and Seagate have seperately announced their latest high-capacity hard drives for surveillance applications.

Western Digital announced the availability of WD Purple, a purpose-built line of 3.5-inch, high-capacity hard drives. Designed specifically for video surveillance units, WD Purple hard drives are designed for use 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.

WD Purple hard drives are equipped with 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

WD Purple hard drives are designed and tested to surveillance-class standards and are compatible with chassis and chip-sets. A Compatibility Selector is available with surveillance drive selection at: http://www.wd.com/en/products/products.aspx?id=1210.

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 (WD10PURX) is $89.99; the 2 TB drive (WD20PURX) is $119.99; the 3 TB drive (WD30PURX) is $159.99 and the 4 TB drive (WD40PURX) is $199.99 USD.

Seagate also today took the wraps off its seventh-generation hard drive disk (HDD) engineered for surveillance and video analytics applications- the Seagate Surveillance HDD.

A 3.5-inch drive, the Surveillance HDD is available in capacities up to 4TB. The drive incorporates rotational vibration (RV) sensors enabling it to reliably perform in systems with up to 16 drives.

The drive's improved time-to-read system allows installers to customize power settings and better support motion-activated cameras. Drives spin down for energy-saving efficiency when no motions are detected by cameras, while quickly powering back up when a motion-sensing camera is triggered.

The Surveillance HDD has a 1 million hour MTBF, (mean time between failure).

Seagate	Surveillance HDD ST4000VX000	Surveillance HDD ST3000VX002	SV35.6 Series ST3000VX000	SV35.6 Series ST2000VX000	SV35.6 Series ST1000VX000
Capacity	4TB	3TB	3TB	2TB	1TB
Interface	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s
Spin Speed	7200RPM	7200RPM	7200RPM	7200RPM	7200RPM
Cache	64MB	64MB	64MB	64MB	64MB
Areal Density	625	536	625	625	625
Length	146.99mm	146.99mm	146.99mm	146.99mm	146.99mm
Width	101.6mm	101.6mm	101.6mm	101.6mm	101.6mm
Height	26.11mm	26.11mm	26.11mm	26.11mm	19.98mm
Typical Weight	610g	610g	626g	626g	400g
AFR	<1%	<1%	<1%	<1%	<1%
Average Operating Power	4.80W	4.80W	8.0W	8.0W	5.90W