The Web site Matt’s Computer Trends has followed the price per GB for hard disks dating back to 1995 and generated some interesting graphs and discussion. Though I rarely link elsewhere, I found this article particularly interesting given my recent spat of purchasing several large ATA drives.
I hadn’t given it much thought until recently, but I expect to retire my 4 x 120GBs (if they survive) and replace them with 3 or 4 x 300GB currently in the backup server, which will be filled with new, larger drives. I like to maintain 1.5 or 2:1 backup server to file server ratio as economically feasible. As a result, I suspect I’ll be buying 2 x 500GB in the next two years.