RMS_DFMBFREL

   RMS_DFMBFREL establishes the default RMS multibuffer count for
   relative disk operations. This value defines the number of I/O
   buffers that RMS allocates for each relative file.

   You can set this system parameter with the DCL command
   SET RMS_DEFAULT/SYSTEM and display the parameter with SHOW RMS_
   DEFAULT.

   RMS_DFMBFREL is an AUTOGEN and DYNAMIC parameter.