Actually, multiple HDs is somethign that I have said for years.
My main box has 6.
C: is 8GB of a Raptor with T: as the rest, D: is a 120GB Seagate SATA, E: are a Striped pair of Seagate 320GB Drives, and F: is a striped pair of Maxtor 40GBs
My others have only 2 drives
C: and E: are on one drive, and D: and F: are on the other
With the exception of my WinXP64 Box, and thats currently piddling about with weird RAID setups, having 4xMaxtor 40GB Raid 0+1
Having one large HD and trusting it with so much data, is as close to thick as you can get.
Some argue, that they keep regular backups, but there are 2 thigns that come tomy head on this.
1 - How the bloody hell can you afford to back up close to 400GB of data
2 - If you do have backups of all of that, then you dont actually need 400GB do you?
I myself do indeed have utterly stupid ammounts of HD storage, however, a lot of that is work related, the rest is simply a copy of every system tools, and driver I have for all my PCs, plus any other PC that I come into contact with, also I need extra space for when I need to back up any HDs data, but for home use, do I need it?
No, a 5 year guarantee does give that little bit more peace of mind. There is no doubt that a high quality HD may very fail sooner than expected, and also a poor quality HD might outlive your expectancy too, sometimes its the luck of the draw, but statistically, Seagates will outlive all the other makes.
You make your choice.