Can I run multiple terminals on the console of Solaris x86 like those supported on Interactive Unix and SCO?
Yes. In Solaris x86 2.1, these worked ‘out of the box’. In Solaris x86 2.4, they are no longer configured during the installation, but they still work if configured afterwards by hand. Sun apparently disabled them in this way because they are no longer officially supported, but fortunately, they did not actually remove them from the kernel, so you can configure them back in yourself as follows.