Defining storage locations

Use the LOCDEF parmlib command to define installation defined storage locations. Storage locations can be any 1 to 8 character named location except for the DFSMSrmm reserved location names ALL, HOME, and CURRENT. You can also use the DFSMSrmm built-in storage location names as installation defined storage locations. You can also define characteristics of system-managed storage locations using the LOCDEF parmlib command. Table 1 shows the differences between built-in and installation defined storage locations.

Table 1. Differences between built-in and installation defined storage locations
To	For Built-in Storage Locations	For Installation-defined Storage Locations
Segregate shelf locations by media name	You cannot segregate built-in storage locations by media name or type of media.	You can segregate shelf locations by specifying media names
Define storage locations	You do not need to define built-in storage location names. The three are:LOCAL, DISTANT, and REMOTE.	You can define an unlimited number of storage location names.
Define bin numbers	DFSMSrmm uses bin numbers 1 through 999999.	You can use any 6 character value.
Shelf-manage	DFSMSrmm automatically provides shelf-management.	You can decide.
Determine location priority	DFSMSrmm uses the default priority.	You can define the priority in the LOCDEF location definitions.