Hello Ip Cam Talk, I'm currently running 1 'rebranded' Hikvision ds-2cd2332-i, using Blue Iris on my desktop PC. I'm wanting to expand, probably 4 cams total near term, up to 8 cameras max, since the gigabit POE switches I'm looking at have 8 ports. Leaning toward the Thinkserver ts140 with either raid 5 or 10 and using the WD 4TB drives. The red and purple drives from WD are basically the same price. The purple is supposedly suited for video footage (fullframe)? The red seems slightly more durable(in theory?). Any advise on which type of hard drive? Red v Purple. I'm new to this so any advise is appreciated, though I'm hoping for opinions from those who have used these drives and compared them.