Remember the bug where an incompatibility with Mavericks would cause WD's hardware RAID manager software to kill all the data on your WD RAID drives? Never update until you know WD is ready. BTW, I don't know if OS updates ever "just worked" with old software. I remember Leopard especially causing problems. But at least the updates weren't shoved down our throats as much.Let's hope they've solved the 1gb upload limit suddenly imposed on my WD MYCLOUD NAS drive since installing EC. It's a known issue and never occurred with Yosemite. Even Western Digitial seem oblivious to this yet on Youtube a guy is showing a workaround for it by going into Finder directly. What a pain. I remember when "everything just worked".