This describes the JES2 commands you use to control the spool offload devices and the corresponding transmitters and receivers. For an overview of the spool offload facility, initializing offload devices, and issuing commands for controlling spool offload operations, see z/OS JES2 Initialization and Tuning Guide, SA32-0991.

Spool offload devices are started dynamically with operator commands. Eight spool offload devices can be defined per system; however, only a maximum of eight can be active within the MAS configuration. Each individual device corresponds to a unique offload data set.

A job transmitter, SYSOUT transmitter, job receiver, and SYSOUT receiver are automatically associated with each offload device defined. These enable the offload device to control both offload (TRANSMIT) and reload (RECEIVE) functions. When specifying one of these transmitters or receivers, you must specify the device number of the associated offload device.