Is there a recommended 3 TB drive I can use an expander without fear of failure/performance issues? We have a pair of the TiVo-approved drives, but they are only 1 TB each. That means I'm only using 2 out of a maximum 4 TBs of space. I'd like to double the storage on our units. TiVo doesn't seem to be in a hurry to manufacture a storage device for power users, which is understandable since I know I'm in the minority about my space needs. I'm just curious how other power users are handling this these days. The similar threads suggestions for this are from circa 2007-2009, so they're not applicable here. Thanks in advance for your suggestions/advice.