Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.CRIT:"Disk-{#SNMPINDEX}"}.
 Second condition should be one of the following:
 - The disk free space is less than {$VFS.FS.FREE.MIN.CRIT:"Disk-{#SNMPINDEX}"}.
 - The disk will be full in less than 24 hours.