I got a Retina Macbook Pro with external USB 3 drive that has 1.5TB of data that needs to be backed up. I purchased a Western Digital My Cloud single 4TB NAS drive but its backing up at 8GB per hour via time machine over WiFi. I'm seriously thinking of returning it and getting a single drive Synology NAS unit. I'm just wondering how much faster that might be to back up all my data via time machine over WiFi. I don't mind waiting 2-3 days to backup everything but 8 days is a bit too long for me. I've read online that these WD MyCloud drives are slow but this is really slow. I need a NAS unit as I have other machines in the house that need to be backed up. I'm essentially doing this over WIFI with a average speed between 100mbps to 150mbps.