Below are method to perform system memory checking. Most of below step applied on X series server which some times "prtdiag -v" not showing up full information.
1. Log in into Solaris terminal shell and switch to root authentication.
2. After that, run syntax "prtconf | head -3 |grep Mem". This syntax will prompt the memory size in MB.
3. There are most on x86 architecture will using this method, since the the "prtdiag -v" in x86 environment not showing up full hardware information.
