A CA XCOM Data Transport PLEXQ consists of a number of XCOMXFER servers. Each PLEXQ Group is given a unique name. All of the servers in the PLEXQ must specify the same name for the PLEXQ parameter in the CONFIG member or the EXEC PARM override. Each server can belong to up to eight PLEXQs at a time. Each server that is a member of a PLEXQ has its own request queue (XCOM RRDS). These servers can share a CA XCOM Data Transport control data set (XCOMCNTL). Member servers of a PLEXQ are autonomous peers which simply respond to requests received using incoming messages using SYSPLEX Signaling Services.
A PLEXQ can consist of one server, up to the maximum number of servers that can be practically supported by the user’s SYSPLEX environment. There is no maximum that the PLEXQ architecture itself imposes.
The following diagram is a representation of servers in a PLEXQ called XCOMPLXQ:
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