Sun Java System Web Server 7.0 Update 3 Installation and Migration Guide

Server Core 64–bit Binaries (Solaris SPARC, AMD64, Linux Only)

If this option is selected, the 64–bit binaries required for setting up the 64–bit runtime for the default Web Server instance are installed. This option is selected by default and displays only if the system on which you are installing has 64-bit support. If this option is selected, both 64- and 32-bit binaries are installed. For more information about 64-bit support in Web Server 7.0, see 64-bit Support.