I have an HR24-100 in our bedroom. I've had it for many years with no issues (it was built in 2011). I have a 1TB eSata connected to it. It still works fine but over the last few weeks its internal hard drive will occasionally start spinning really fast and really loud. It does this randomly and not all the time. It will usually stop spinning so fast and so loud if we lightly tap on the top of the case. I've ran the short and long smart scans and surface test scan from the built in surface test utility and everything passed. And like I said it still functions fine, but with it being in our bedroom it can get really loud when trying to sleep. Any ideas on what the problem is? Is the internal drive going bad? If so, could I put the external drive in it without losing all the recordings on the external drive? Other suggestions?