As always with WD: built and goes. And as always: Who uses it in the raid, which may be ordered from different dealers or at a distance from a few weeks - definitely different series. I at WD not had failures, but in others, and since then I use this tactic. Packages are WD drives but the most reliable in recent years that I know of. Whether it be red, green or blue or black. I verbaue the blue also in server, the red and green in volumes for data storage (data server volumes or NAS), the black if it is to go "fast". Measurements I've never done, usually anyway only the MS hardly noticed in the daily operation. Reliable and trouble-free, it has to be. The hard disk shutdown, I always set to 30 minutes - far too often on and off.
