For the umpteenth time:
 
The D-disk is a scratch work disk,  which is erased at startup and cannot
be used to archive files. I know this would be convenient since you would
then not have to ask systems people to make another disk, but this is not
open to discussion.  The reason LISTSERV needs a scratch  disk is that it
needs to be sure  it has a certain amount of  scratch space available for
work files.  If you fill  that reserved  space with arbitrary  amounts of
files, you no longer have a known amount of reserved space. If the amount
is so small that it would be no  problem, there is no reason it cannot go
to the A-disk.
 
The FILEDISK variable  is described as "the filemode of  the DEFAULT disk
to be  used for  storing files via  the PUT command".  This is  a default
filemode, so what is LISTSERV supposed to do if it has two values, flip a
coin?
 
  Eric