Step 10: Defining parmlib member EDGRMMxx

Perform this step once for each z/OS image.

Related reading: See Implementing DFSMSrmm client and server systems for details about setting up DFSMSrmm systems.

Create a parmlib member EDGRMMxx definition for each DFSMSrmm standard system, server system, and client system. The member name is in the form EDGRMMxx, where xx is a two character alphanumeric suffix of your choice. The default is EDGRMM00. A sample parmlib member is available as EDGIVPPM in SAMPLIB.

You can use system symbols to enable easier sharing of the EDGRMMxx parmlib member. See z/OS MVS Initialization and Tuning Reference for how to use system symbols in parmlib members.

You might need some information in the EDGRMMxx parmlib to be specific to a subset of your systems; for example, the PRTITION, OPENRULE, or VLPOOL entries might need to be different. To enable this information to be handled on a system-by-system basis, you can specify a second parmlib member to be used. Use the MEMBER operand on the OPTION command to identify the second parmlib member. Using system symbols for the MEMBER value enables a different second parmlib member to be used on each system.

Recommendation: Specify the PARMLIB member EDGRMMxx as a member of SYS1.PARMLIB or the PARMLIB concatenation. If you follow this recommendation, you can use the DFSMSrmm startup parameters to avoid stopping and restarting DFSMSrmm. For example, you can use the modify command (F DFRMM,M=xx) to implement updates to the data set and avoid stopping and restarting DFSMSrmm. You can also restart DFSMSrmm using another data set with parameters to implement changes.

The RACF ID associated with the DFSMSrmm started procedure requires READ access to the parmlib member EDGRMMxx data set.

Table 1 shows several ways to define the parmlib member.

Table 1. Creating DFSMSrmm parmlib definitions
Way to Define	Example
Member of SYS1.PARMLIB	SYS1.PARMLIB(EDGRMMxx)
Member of PARMLIB concatenation	SYSC.PARMLIB(EDGRMMxx)
Member of separate data set	MY.PARMLIB(EDGRMMxx)
Separate sequential data set	USER.PARMLIB