INITIAL_PLEXES
PLEX = (struct plex *) Malloc(sizeof(struct plex) * INITIAL_PLEXES);
bzero(PLEX, sizeof(struct plex) * INITIAL_PLEXES);
vinum_conf.plexes_allocated = INITIAL_PLEXES;
EXPAND(PLEX, struct plex, vinum_conf.plexes_allocated, INITIAL_PLEXES);