Component overview
Figure 1 shows
a generalized overview of the z/OS Explorer layout
on your host system.
- Remote Systems Explorer (RSE)
provides core services, such as connecting the client to the host
and starting other servers for specific services. RSE consists of
two logical entities:
- RSE daemon (RSED), which manages connection setup.To do so, RSE daemon creates one or more child processes known as RSE thread pools (RSEDx).
- RSE server, which handles individual client request. An RSE server is active as a thread inside a RSE thread pool.
- TSO Commands Service (TSO cmd) provides a interface for TSO and ISPF commands.
- JES Job Monitor (JMON) provides all JES related services.
- More services are available, which can be provided by z/OS Explorer itself or corequisite software.
The description in the previous paragraph and list shows the central role assigned to RSE. With few exceptions, all client communication goes through RSE. This allows for easy security related network setup, as only a limited set of ports are used for client-host communication.
To manage the connections and workloads from the clients, RSE is
composed of a daemon address space, which controls thread pooling
address spaces. The daemon acts as a focal point for connection and
management purposes, while the thread pools process the client workloads.
Based upon the values defined in the rse.env configuration
file, and the amount of actual client connections, multiple thread
pool address spaces can be started by the daemon.