The Solaris Resource Manager product is related to many other software components that might be present in the system, but it does not replace any of them.
Solaris Resource Manager and Solaris Bandwidth Manager manage different types of resources.
Solaris Resource Manager is not a system monitor in the sense that Sun Management Center is.
Solaris Resource Manager is not really a capacity planning tool. While it helps the administrator manage capacity, and its accounting functions construct usage records that the administrative staff might use to do trend analysis, it does not do capacity planning in the traditional sense of the term.
Solaris Resource Manager is not a job scheduler; it controls how a process runs on its host system, rather than when or where it runs.
Because Solaris Resource Manager operates only on a single system, it is not a mechanism for implementing load balancing across cluster members. Solaris Resource Manager can be used effectively to manage workloads individually on each member of a cluster, however. For example, arrangements might be made to prioritize a workload from a failed member of a high availability cluster over a background workload running on standby member.