I have an HR54-700 with a 4TB Western Digital Purple external drive in an eSATA enclosure. The enclosure has two LED’s, a blue one indicting that the drive is powered on, and a red one indicating drive activity. Current hard drive usage is less than 10% (over 90% free space). Starting yesterday, I started experiencing intermittent HR54 freezes where the remote becomes completely unresponsive, and the video and audio freezes. When this happens, I notice that the red activity indicator LED on the enclosure is solid red. After several seconds, the DVR in-freezes, audio and video resumes, the remote is responsive, and the red LED indicator is back to normal blinking. Also, overnight I received several alerts from my network monitor that the HR54 had re-booted. It re-booted again today while I was watching something on my AppleTV. Troubleshooting: - I ran the boot-up diagnostics “Full SMART test”, and the test was successful. - I checked the drive enclosure, and it was barely warm to the touch. - I checked the eSATA connection to make sure it was secure. - I ran a CLEARMYBOX. After all this, still no joy—random unresponsiveness and lockup’s, always associated with a constant red LED drive activity indicator. Does this look like a drive failure? I could easily swap out the drive for a new one because I don’t have any recordings that can’t be recovered through on-demand. Or does it sound like a HR54 hardware issue? Any advice would be appreciated!