I'm a bit new to this but have had delivered a 2325iws and a NVRds-7604ni-e14p. I also ordered the HD seperate and from ebuyer which is a this 3TB Purple - http://www.ebuyer.com/625080-wd-purple-3tb-3-5-sata-surveillance-hard-drive-wd30purx - Not sure if I've made a boo boo but when I power it up with the HD installed it starts beeping. Any ideas why it's doing this?