MVSUPMSG NUM
MVSUPMSG_NUM is a dynamic system parameter that suppresses mount verification start and end messages for fibre channel disk devices on Alpha and Integrity servers if mount verification completes on the first attempt and if mount verification does not occur too often. MVSUPMSG_INTVL 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.