not sure if I understand your question, but I use this command to watch IOPs.
'sysstat -x 1' (the -x is a flag for all things you can watch, and the 1 is refresh rate in seconds). then depending on protocol, you can watch IOPs. FCP, iSCSI, or NFS.
also, if you set up Operations Manager (DFM, OnCommand), then download the management console from there, you can get visual representations.
hope that helps.