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sr71 2.1K Views

Oct 2, 2022 8:30 AM

4TB WD Purple Surveillance Hard Drive @Newegg $80

$80

Newegg

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w/ promo code GTBBXA65

https://www.newegg.com/purple-wd4...6822231535

Product Description:	Pros: The video surveillance market continues to grow and as cameras in increase in resolution, storage needs increase. Home and small business systems that involve up to a few dozen cameras and have the need to be cost efficient are the target for “Surveillance Specific” hard drives. The two main contenders are the WD Purple series (this) and the Seagate Surveillance series. They achieve “enterprise” disk levels of performance at a fraction of the cost as long as they are used in their very specific task niche. What video security systems have in common is that they have to spend most of the time writing multiple data streams continuously (at relatively low data rates per stream) while spending only a minimal amount of time reading from disk. This drive supports 145 MB/sec sustained data transfer rates with a 6Gb/sec SATA interface. Your typical 1080p IP camera generates a H.264 or H.265 data stream well under 2 MB/sec. Surveillance drives are tuned to not lose frames when writing while their reading efficiency is mostly a secondary concern. WD Purple drives market “AllFrame” technology which is a tuned system for writing up to 64 camera streams without losing data 24/7. Annualized workload is 180 TB/year. There is a 3 year warranty. 65 degree C max operating temperature. Low RPM (5400 class). LOW POWER USE.(4.4 W). WD assumes that you will be Reading back video 20% of the time. Their website is pretty amazing in helping decide what drive you need to buy based on: number and type of cameras, how many days of video you need to store, etc. You don’t have to do the calculations yourself. No RAFF limits you to 8 drives in a system. Corrosion resistant components start at 4 TB and above in this product line. As a contrast, Seagate assume that Reading is only 5% of the workload, their website is not as directed toward the home/non-IT consumer but they have a “Safe and Smart Selection” white paper. 180 MB/s transfer rate. Up to 64 cameras. 3 year warranty. 70 degree C operating temp. 5.6 W. Faster RPM. No Rotational Vi
Product SKU:	N82E16822231535
Limited Warranty period (labor):	3 years
Limited Warranty period (parts):	3 years
Support Phone:	1-800-275-4932

w/ promo code GTBBXA65

https://www.newegg.com/purple-wd4...6822231535

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Post Date	Sold By	Sale Price	Activity
05/21/22	Newegg	$86	3
03/07/22	Newegg	$83	0
11/30/21	Newegg	$90 Popular	3
10/30/21	Newegg	$89	3
10/23/21	Newegg	$90	1
10/01/21	Newegg	$90	6
09/16/21	Newegg	$90	1
09/01/21	Newegg	$90 Popular	9
07/29/21	Newegg	$90	1
07/29/21	Newegg	$90	0
07/13/21	Newegg	$90 Frontpage	39
06/11/21	Newegg	$90	3
05/07/21	Newegg	$85	5
04/19/21	Newegg	$85 Popular	22
03/05/21	Newegg	$87	2
01/14/21	Newegg	$85 Popular	11
12/31/20	Newegg	$88 Frontpage	24
11/27/20	Newegg	$90	2
11/19/20	Newegg	$90	2
11/04/20	Newegg	$90	0