i haven't found anything about the subject on the installation manual
should i install a copy of the agent on every zone or just on the global one?
is there a best practice?
ps: i'm a newbie on solaris
you should install in each zone if you need to manage each zone. if it's a sparse zone you need to install w/ the -local flag. search the communities for 'solaris zone' or 'sparse zone', there's alot of talk about this.