Hello

 If the recovery log is full you can extend it even if the server is down.

ADSM server down

DSMFMT new reclog volume

then issue DSMSERV EXTEND LOG volnameofnewvolume

Server starts just enough to define the vol and extend the log then shuts down
again

Now you can start your server normally and get a DB backup to clear the log.

Considerations

1) make sure the new vol is a usable % of the total log 4 or 5% is usually
enough but I normally try for 10% to give a little wiggle
     room as there was usually a problem with the DB backup that needs solved.

2) THE ABSOLUTE MAXIMUM SIZE OF A LOG IS 5.3 gb, do not know what happens after
this but I doubt it is good

As for specifying a drive to use, for DSMLABEL it allows you to specify the
drive to use. Other than that I do not believe you can specify or
predict.

 Regards
  Daniel