Mizee - if your comments are directed towards me, I wasn't talking about a RAID. Of course a RAID array is necessary to go beyond 250GB or 300GB. I was talking about SATA drives, which aren't necessary to building a RAID array for recording. 5400RPM ATA100 drives are more than sufficient for recording HD. You can pick up 4 250GB 7200RPM drives for $100 or $125 each, put them into a RAID0 configuration, and have close to your TB of space. Much cheaper, and just as reliable for recording HD, than SATA drives. Or, if a user is very concerned about the recorded data, put them into a RAID5 array, although for recording HD, I'm not sure that the added expense of the RAID5 controller is really worth it.
But, that's just my opinion that has worked perfectly for me for the last 2 years recording HD.