Solaris 10 does a pretty good job of handling multipath functionality with very little help from the systems administrator. Having Solaris use multipathing is as simple as running the stmsboot -e command. This will ask you a few questions about which controllers to enable it on if you are sure and if you want to go ahead and reboot to make the changes take effect. This will reboot the box, detect all multipathing settings, set them, and reboot once again in a new glorious multipath enabled world.