/mcpLow WaterMark is a percentage value of the total logging disk space post which when you receive an alert, indicates the disk space is full by the configured percentage of Low WaterMark. High WaterMark is a percentage value of the total logging disk space post which the older log files are purged. High WaterMark Exceeded and Low WaterMark Exceeded are events that indicate the percentage of used disk space in the logging partition. LogPartitionHighWaterMarkExceeded This event indicates that the percentage of used disk space in the log partition has exceeded the configured High Watermark. LogPartitionLowWaterMarkExceeded This event indicates that the percentage of used disk space in the log partition has exceeded the configured Low WaterMark. The threshold percentage value of both events could be configured in RTMT based on the requirement. By default, High WaterMark is set to 95% of the total logging partition and Low WaterMark is set to 90% of the total logging partition. At times, a need arises for certain activities in the call manager to take place when there is insufficient space in the Logging Partition and additional space needs to be created. During such events, additional space could be created in the Logging Partition by adjusting the threshold values of High WaterMark and LowWaterMark, respectively. When the threshold value of High WaterMark is lowered, it purges older log files, thereby creating additional disk space in the logging partition. Procedure Adjust Low WaterMark Launch RTMT, and log in to the desired cluster. On the left pane, navigate to System > Tool > Alert Central. On the right pane, under System Right, click LogPartitionLowWaterMarkExceeded > Set Alert/Properties.