Hi Steve,
can you describe what the issue is exactly? There are lots of logs on the service processor specifically that deal with optimizer. Off the top of my head I can't recall the directory path, but it is quite obvious once you start looking at it, also there is a symapi server on the service processor, if that has hung you may find that optimizer does not work,. First port of call I would recommend to be primus or powerlink and put in any error messages you recieve,
all the best,
Colin