The DNS server has completed a scavenging cycle: Visited Zones = {0}, Visited Nodes = {1}, Scavenged Nodes = {2}, Scavenged ...

The DNS server has completed a scavenging cycle: 
Visited Zones     = {0}, 
Visited Nodes     = {1}, 
Scavenged Nodes   = {2}, 
Scavenged Records = {3}. 
 
This cycle took {4} seconds. 
 
The next scavenging cycle is scheduled to run in {5} hours. 
 
The event data will contain the error code if there was an error during the scavenging cycle.