This really documented as such. The listserv postmaster must define another minidisk for Listserv's use. Next, it is a good idea to add a MDISK.cuu statement to LOCAL SYSVARS, to have Listserv watch the space usage. When that is done, archiving for a particular list is started by setting the list keyword NOTEBOOK= Yes,fm,type,access where fm is the filemode of the log disk type of archive, most commonly Monthly access who can request the log, usually Public The Notebook keyword is documented in the file LISTKEYW MEMO, while the MDISK.cuu statement for LOCAL SYSVARS is documented within LOCAL SYSVARS.