You will need a good volume history in case of a disaster recovery.

I also found it was beneficial to have a copy of the volhist that ADSM
didn't automatically update. (in other words, it is not in the server
options).  That copy would not get overwritten in a recovery situation.

--
"Things which matter most must never be at the
"Things which matter most must never be at the
mercy of things which matter least." - Goethe