In the Performance area of OpsCenter, you monitor a number of performance metrics about a Cassandra cluster. Real-time and historical performance metrics are available at different granularities: cluster-wide, per node, or per column family. OpsCenter 3.0 and later has been optimized to handle thousands of column families efficiently.
From the Alerts area of OpsCenter Enterprise Edition, you can configure alert thresholds for a number of Cassandra cluster-wide, column family, and operating system metrics. This proactive monitoring feature is available only in OpsCenter Enterprise Edition.