It is also availabe at volume level.If set at volume level, it takes precedence than the global option.
For all other volume for which its not set specifically, globabl options holds good.
lnx186-149:~ # dfm volume set
Valid options are
volFullThreshold Volume Full Threshold (%)
volNearlyFullThreshold Volume Nearly Full Threshold (%)
volFullThresholdInterval Volume Full Threshold Interval
userEnableAlerts Enable User Quota Alerts
userFullThreshold User Quota Full Threshold (%)
userNearlyFullThreshold User Quota Nearly Full Threshold (%)
volSnapshotFullThreshold Volume Snap Reserve Full Threshold(%)
volNearlyNoFirstSnapThreshold Volume Nearly No First Snapshot Threshold(%)
volNoFirstSnapThreshold Volume No First Snapshot Threshold(%)
volReserveNearlyDepletedThreshold Volume Space Reserve Nearly Depleted Threshold(%)
volReserveDepletedThreshold Volume Space Reserve Depleted Threshold(%)
volGrowthEventMinChangePct Volume Growth Event Minimum Change (%)
volNearlyOvercommittedThreshold Volume Quota Nearly Overcommitted Threshold (%)
volOvercommittedThreshold Volume Quota Overcommitted Threshold (%)
volSnapshotCountThreshold Volume Snapshot Count Threshold
volSnapshotTooOldThreshold Volume Too Old Snapshot Threshold
volNearlyOverDeduplicatedThreshold Volume Nearly Over Deduplicated Threshold (%)
volOverDeduplicatedThreshold Volume Over Deduplicated Threshold (%)
lnx186-149:~ #
Regards
adai