mksysb backup

How I can to obtain a full Backup of a AIX server with the command "mksysb"?? what is the correct form?
Thanks

Examples at the bottom of the page.

mksysb will only backup the root volume group, rootvg.
If you have other volume groups, most systems do, you can use the savevg command to back up non rootvg volume groups.

lsvg
will show what volume groups you have.