I'm on a quest for low noise, reduced heat generation, and energy efficiency in my Power Mac server. It has 2 modern SATA drives (quiet fluid bearings) for file storage and an old IDE drive (ear-piercing ball bearings) for the OS. I'm considering getting rid of that thing and popping in an IDE-to-CompactFlash adapter in its place. OS X would be installed on a 4 or 8 GB CF card. All non-OS stuff, including user home directories, would go on the SATA drives. Has anyone done anything like this? I've heard about how flash memory can only be overwritten so many times before it fails, and I know OS X writes to the disk a lot (log files, swap, etc.) Speed is not a huge concern - I only need high performance from the SATA drives. What about a CF Microdrive?