Starting Up Mac OS X Server in 32-Bit Mode
Server Diagnostics Mac OS X requires that Mac OS X Server be running in 32-bit mode.
By default, most Intel-based Xserve models run in 64-bit mode.
You should run Server Diagnostics Mac OS X on a dedicated volume so starting up
in 32-bit mode won’t affect users. If you use the volume for other purposes, consider
temporarily starting up Mac OS X Server in 32-bit mode.