TS/MP 2.5 Release Supplement

Figure 2 ACS Subsystem Architecture: Processor View
Domain Coordinator Process ($ZACS)
The domain coordinator process is also the ACS subsystem manager process. Only one instance
of this process runs in a system that coordinates and manages the ACS domain resources configured
for the subsystem. It also creates the initialization file (BCINI), which contains the ACS subsystem
configuration.
Process Broker Process ($ZPnn)
The process broker (PB) manages links from the TS/MP PATHMON processes for Pathsend requests.
The name of the process is $ZPnn, where nn is the number of the CPU in which the process is
running.
Configuration Subscriber Process ($ZCSnn)
The configuration subscriber process publishes critical ACS subsystem configuration information
to the other ACS subsystem processes. The name of the process is $ZCSnn, where nn is the number
of the CPU in which the process is running.
Redirector (ROUT) Process ($ZLnn)
The redirector process performs link-management functions similar to those performed by the former
TS/MP 2.0 LINKMON (TS/MP ROUT) process. To simplify application migration, the redirector
process uses the same program filename ($SYSTEM.SYSnn.ROUT) and process name ($ZLnn)
used by the TS/MP 2.0 LINKMON process; where nn is the number of the CPU in which the
process is running. Figure 3 (page 17) shows an overview of the redirector process in a Pathsend
environment.
For each request from the Pathsend library, the redirector process performs the necessary
link-management function to obtain a server link from the PB. After obtaining the server link, the
PB verifies that the requestor has the authority to perform a send operation to the specified server
class and the redirector process performs the send operation.
14 Application Cluster Services (ACS) Subsystem