I have 5x4TB purples in a RAID (6)
Been using them for nearly 2 years.
guess what…
They work fine.
Only drawback is the speed. They are a BIT slow… other than that if you can get these cheap then get them,
They are designed for PDR’s / Security cameras, doesn’t effect how they work in a PC… all a bit of a scam RED BLUE BLACK GREEN PURPLE! its a sales scam… while there are differences between the drives if you are using it for data storage ie a media server then these are the best option.