Hard Drive Selection - WD Gold Vs Purple

Hi Guys

Any additional info on this question, I was asking a CCTV supplier why they preferred to use WD RE4 & WD Gold drives

I know they are enterprise level drives , longer life etc , more reliable

But I asked why they would not use WD - Purple , and they replied with this answer, what does this mean in simple terms and is it true ?

Answer

Rotational Speed of WD RE4 / Gold drives is stable.

Rotational Speed of WD Purple is related to CPU loading. Therefore, it’s dynamic.

Dynamic rotational speed may lose frame and even damage the HDD.

Any help appreciated

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