WD30EFRX 3TB "Red Series"

Newegg had the 3TB version on Friday but was out of stock on Saturday. I clicked the notify button and got an e-mail yesterday at noon, but I was away. By last evening they were out again. Clicked the notify button again, and we will see. I currently have two Hitachi HDS5C3030ALA630 in both of my NVX units along with two Seagate 1TB drives in each. I was going to add some more a while back when they got more reasonable in price, but by then they were gone. I also want to get a couple of the 3TB WD reds to try. I will probably pull the two Hitachi's in my main unit and replace them with two 3TB reds (when I can get them) eventually getting to the point that I have 4 of the red labels in one unit and 4 Hitachis in the other.