I have a Western Digital Elements 1TB usb 2 from PC world hard drive connected to my xt5000, but when playing back programmes I have recorded it sometimes pixelates or freezes for a second or 2 then continues. It also seems a little slow but that's probably just me being picky.
The main problem is the Pixelating and the Freezing during playback.

Is there any other hard drives that are maybe more compatible or more reliable?

Cheers guys