Is it worth starting an Undocumented (not so obvious) Commands/Options
series?

I'll start with two I found today.

Stops ltid on <media_server>

vmoprcmd -h <media_server> -stopltid

Starts ltid on <media_server>

vmoprcmd -h <media_server> -startltid

And this..

echo X > /usr/openv/netbackup/MEDIA_ERROR_THRESHOLD

X = number of attempts (within 12 hours) to use media failing due to
      read/write error before freezing it.

Regards
Peter Marelas