specifies the volume of a unit within the subsystem.
FILE(ddname)
specifies the name of a DD statement that identifies the device
type and volume of a unit within the subsystem. For ddname,
substitute the name of the DD statement identifying the device type.
VOLUME(volser)
specifies the volume serial number of a volume within the subsystem.
Abbreviation: VOL
UNIT(unittype)
specifies the unit type of the subsystem.
UNITNUMBER(devid)
is the MVS™ device number.
The UNITNUMBER parameter is only accepted with the following:
DEVICE ON or OFF
SUBSYSTEM OFF
NVS OFF
DASDFASTWRITE ON or OFF or PENDINGOFF
DISCARDPINNED
REINITIALIZE
RESETTOSIMPLEX
CACHEFASTWRITE
Abbreviation: UNUM
Note: The UNITNUMBER parameter
cannot be used for an online device in the “Intervention Required”
state.