MVSUPMSG_INTVL

   (Alpha and Integrity servers) The system suppresses mount
   verification start and end messages for fibre channel disk
   devices if mount verification completes on the first attempt
   and if mount verification does not occur too often. MVSUPMSG_NUM
   and this parameter establish this limit.

   The system issues a mount verification message after a sequence
   of MVSUPMSG_NUM mount verifications have gone unannounced on a
   specific fibre channel disk device within a span of MVSUPMSG_
   INTVL seconds.

   If this parameter is zero, all mount verification messages are
   announced.

   MVSUPMSG_INTVL is a DYNAMIC parameter.