To set the event storage use limit for all host endpoints:
Log in to the Web UI as an administrator.
From the Admin menu, select Policies to access the Policies page.
In the Policies table, click the Agent Default policy link to access the Edit Policy page.
Click the Resource Use tab.
In the Resource Use section, click the Storage Mode drop-down and select the event storage mode setting.Valid modes include: conventional (default), in-memory, memory-mapped I/O (not recommended), and memory-mapped I/O with log.