second drive or partition
I like to keep my system drive running smooth so I use a seperate partion and/or a seprate drive to do all my other work on. Downloading, file conversion, PhotoShop scratch disk, temp files, swap, etc... all on a seperate drive and/or partitions. When I think that my disk has been abused too much.. I just newfs it and I dont have to worrie about my system disk. I even have dedicated swap partition on a second drive so swap does not fragment my system drive. I have seen a proformace boost doing all this... the slowest part of you system .. is your drive. If you can read and write at the same time (to and from diffrent drives) You are going to save a lot of seek time.
-evildead