How can i add a new memcache in using system?

[鱼 邹]

hi,memcached
    I'm sorry to trouble you!  I have one question to ask you.
I has started one memcache on port 11211 , if i want to add a new
memcache(11212) , there are need to do same thing . So , how can i do
that ?
Can i want to restart the first memcached on 11211?