Placement of LOADxx

You can place the LOADxx member in one of the following system data sets:

Consider placing LOADxx in the SYSn.IPLPARM data set. During IPL, the system looks for LOADxx in the following order:

  1. SYS0.IPLPARM through SYS9.IPLPARM on the IODF volume.
  2. SYS1.PARMLIB on the IODF volume.
  3. SYS1.PARMLIB on the sysres volume.
Note: The IODF volume must be in the same subchannel set as the IPL device.

Do not create a SYSn.IPLPARM data set unless it contains the LOADxx member that is used to configure your system. When the system finds either SYSn.IPLPARM or SYS1.PARMLIB, it expects to find a LOADxx member in the data set. The search will stop with the first SYSn.IPLPARM or SYS1.PARMLIB data set found. The system will use the LOADxx it finds within that data set as designated by the LOAD parameter. If the LOADxx member specified on the LOAD parameter is not in the data set, the system loads a wait state.

Note: Because the system data sets are searched in ordered sequence, use SYS0.IPLPARM for best IPL performance.
Parent topic: LOADxx (system configuration data sets)