I have successfully completed my SCSI my migration path.
Nebula is running a sweet LSI MegaRAID 466 with two 10K RPM Seagate Cheetah 18GB SCSI disks. Sarah is running a 17GB IBM Ultrastar 7200RPM Wide SCSI disk on an Adaptec 2940UW. Faith, my workstation, is running a nice Quantum Atlas 10K RPM 9.2GB SCSI disk on an Adaptec 2940U2B OEM. Rebecca, the firewall box, has been up far too long to take offline. Uptime is good for you. If I ever decide to down the box I might upgrade it to a 4GB 7200RPM Seagate SCSI disk with a Adaptec 2940U2W.
Meanwhile, my CoolerMaster 8cm fans with thermal sensors have arrived, so its time to install these beasties in my file server for added cooling and my workstation so it ceases to sound like the roar of a jet engine. Noisy fans suck. I tend to prefer the spinning and clicking of hard disks to the noise of fans anyway.