In 1999, I could download MPEG-1 animation TV- and VHS-captured video files at 100KB/s to 1MB/s and record them using CD-R writer drive (PC IDE/ATA) at 600KB/s to 1.2MB/s. CD-R media were relatively cheap and the cheap Ritek media were reliable enough for such purposes. (It's just "backup" anyway.)
In 2002, I could download MPEG-1, MPEG-2, and even MPEG-4 files at the same 100KB/s to 1MB/s speeds but record them using 8x to 52x CD-R writers and 1x to 4x DVD-R/+R writers at 1.2MB/s to 5.5MB/s. (The average writing speed - including the time to create compilation, lead-in, lead-out time, etc. - 52x CD-R is actually just around 40x.) It didn't take much time to back up all the data I could download.
In 2003, I can now download the same files at 1MB/s to 10MB/s and record them at up to 4x DVD+R/-R (5.5MB/s) speed. (DVD+R preferred and I have both 4x DVD+R and 4x DVD-R writer drives.) Downloading 1TB every day is possible and cheap but consuming hundreds of 4x DVD+R/-R media is extremely costly and unrealistic. Therefore, I now want the new NEC/Toshiba's AOD.