This is a very brief introduction into navigating the device paths in Solaris. I'm using a Solaris 10 installed on Sun v490 for all the commands shown below.
Device files in Solaris
Even though all the block and character special device files are traditionally found under /dev directory, if you look closer at your Solaris 10 setup you will notice that they're not the device files themselves, but instead are just symbolic links to device files under /devices directory.
Solaris uses /devices directory for representing all the physical hierarchy of installed devices and buses found on your hardware system.