Recommended: Use ROPTIONS=

Here is why you should use ROPTIONS= instead of OPTIONS= in your libnames.parm file.
ROPTIONS= specifications override any corresponding options that your SAS users include in their programs. Example 3 demonstrates explicit control of disk usage by the system administrator. In the example, even if SAS users specify file systems using LIBNAME DATAPATH= and INDEXPATH= LIBNAME options during their LIBNAME connection, the administrator's use of DATAPATH= and INDEXPATH= with ROPTIONS= overrides the SAS users' specifications.
In contrast, when you (the administrator) use OPTIONS=, a keyword that is syntactically the same as ROPTIONS=, you are not overriding a user specification. Instead, you are supplementing the user-specified options. In this case, if a user specifies an option, the user's setting is implemented. If the user omits an option, your OPTIONS= specification in the libnames.parm file is used.
System Administration recommendation: Do not specify DATAPATH=, INDEXPATH=, and METAPATH= with OPTIONS=. If you use OPTIONS=, the disk allocation results cannot be predicted. Instead, use ROPTIONS= to explicitly control disk usage at your site.