Using the START command

Use the START command to start or restart the DFSMSrmm subsystem shown in Figure 1.

Figure 1. START command syntax diagram


>>---S DFRMM----+-------+--+-------+---------------------------->
                '-.name-'  '-,M=xx-'   

>--+----------------------+--+----------------+----------------->
   '-,DSN=parmlib_dataset-'  |      .-MAIN--. |   
                             '-OPT=-+-RESET-+-'   

>--+--------------+--------------------------------------------><
   '-REUSASID=YES-'

where:

DFRMM

DFRMM is the default procedure name. Your installation might have defined a name other than DFRMM. See z/OS DFSMSrmm Implementation and Customization Guide for more information on defining the started procedure name.

.name

Specifies a name other than the defined procedure name (DFRMM in the syntax diagram) by which you can call the started procedure. You can then use this name on STOP and MODIFY commands. See z/OS MVS Planning: Operations for information.

,M=xx

xx specifies a parmlib member name suffix with which DFSMSrmm started instead of the default parmlib member. Contact your system programmer to find out what values to use.

,DSN=parmlib_dataset

Specifies an alternative data set name to be used to find the parmlib member for this restart of the DFSMSrmm subsystem.

OPT=

Use OPT= to start or reset the subsystem interface.

MAIN: Use OPT=MAIN to start and activate the DFSMSrmm subsystem address space. OPT=MAIN is the default.
RESET: Use OPT=RESET to reset the DFSMSrmm subsystem interface to remove DFSMSrmm from the system on which this command is issued.

REUSASID=YES

When REUSASID=YES is specified on the START command and REUSASID(YES) is specified in the DIAGxx parmlib member, a reusable ASID is assigned to the address space created by the START command. If REUSASID=YES is not specified on the START command or REUSASID(NO) is specified in DIAGxx, an ordinary ASID is assigned. For more information about reusing ASIDs, see z/OS MVS Programming: Extended Addressability Guide, SA23-1394.

At the console, enter S DFRMM to start DFSMSrmm, using the default procedure name and parmlib member.

When the DFSMSrmm subsystem interface is enabled, tape volume usage is rejected until the DFSMSrmm subsystem is active.