Mainframe-based client connections to the ZMF Server started task may be one of two types:

1. Cross Memory Services (XMS) connections are available when the user or batch job issuing the connection request is executing on the same LPAR that hosts the ZMF Server task.

2. Transmission Control Protocol/Internet Protocol (TCP/IP) connections can be used on both the LPAR hosting the ZMF Server task and also from other LPARs that are connected to the ZMF Server task host LPAR (i.e. via Load Balancing Option (LBO) functionality).

Prior to ChangeMan ZMF 8.2 Patch 5, each utility that connected to the ZMF Server started task chose its own default initial connection mechanism. For example, the batch XML Service utility SERXMLBC defaulted to XMS connections whereas its rexx equivalent, SERXMLRC, defaulted to TCP/IP. However, a change was made in the 8.2 Patch 5 release to standardise all such connection methods. Since that change all connections will default to XMS whenever available to ensure optimal performance. TCP/IP will only be used if explicitly requested or if XMS is unavailable.