because they dont want folks using standard 5400 rpm drives...I just received my NVR5424-24P-4KS2 from Andy. It can hold up to four 8TB HDD drives. I was planning on using WD purple 5400 rpm drives but the NVR instructions says to please use HDD of 7200 RPM or higher and not to use PC HDD. I know the reason for not to using a PC HDD but why would the manufacturer insist on 7200 RPM if it makes no difference between 5400 and 7200 in a surveillance system?
The NVR from Andy is unbranded but I'm assuming its a Dahua.
I dont know exactly. The 52(32/16)-16p-4ks2e, has the E. Stands for the epoe, 8ports are epoe for 800m.