the warning-/error-limits are set by default on the Settings-tab of the SNMP Disk Free Sensors for all drives monitored by the sensor, or individually on the Channels-tab for each drive a different limit.
Please do use either of the limit-places, don't set limits both on the Settings & Channels-Tab.
SNMP Disk Free settings tab has no set limits option (like in WMI Free Disk Space).
channel "Free Space (ID 0)" in Channels tab has an option to set limits
buy only presentage option available. i can't set limit in bytes (like with WMI Free Space)
in addition, i can't see any option to set the default limits (like i have in WMI Free Space)
Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.