Step 1. use "mkfile" to create a swap file within a sufficient
disk space partition.
eg. #mkfile 512m /export/home/swapfile
Step 2. use "swap -a" to add the swap file.
eg. #swap -a /export/home/swapfile
Step 3. use "swap -l" to check it.
Step 4. edit /etc/vfstab ( optional ).
