z/OS JES3 Initialization and Tuning Reference
SA32-1005-00
VOL=
Associates one permanently resident direct-access volume with
the specified mains. One VOL parameter is specified for each volume
defined on the SETACC statement.
volser
Specifies the volume serial number of a direct access volume.
JES3 is to make the volume “unavailable” until the named mains(s)
complete initialization.
procname[,procname]
Specifies the name of the mains that must be initialized before
JES3 will make the associated volume “available”. Each main
name (procname) must match the name parameter on a MAINPROC statement.