Creating alternate DFSMShsm parameter library members

You can create alternate PARMLIB members for different DFSMShsm operating environments.

Note: If you are using concatenated PARMLIB support, refer to the z/OS MVS System Commands for information about creating alternate parameter library data sets.

If you use an alternate member, you must:

Call the alternate member name ARCCMDxx, where xx is the two characters (numbers or letters) identifying the alternate member name or the alternate startup member ARCSTRyy where yy is the two characters (numbers or letters) identifying the alternate member name.

Additionally, you must communicate the name of the new PARMLIB member to the MVS™ operating system. You can either:

Change the DFSMShsm startup procedure to correspond to the two characters xx identifying the alternate member name.
- or
Use CMD=xx or STR=yy on the MVS START command for DFSMShsm. Either keyword used this way must be specified on the PROC statement in the DFSMShsm startup procedure.

For example, in Figure 1, the alternate PARMLIB member is named ARCCMD01, so CMD=01 is specified in the startup procedure.

Figure 1. Example DFSMShsm Startup Procedure. This JCL directs DFSMShsm to start with the command in PARMLIB member ARCCMD01.

 //DFHSM  PROC CMD=01,EMERG=NO,LOGSW=YES,STARTUP=NO,
//       UID=HSM,SIZE=6144K,DDD=50,HOST=1Y

For an example of the entire DFSMShsm startup procedure, see topic Starter set example.