Select Search panel, click Advanced Search. The Advanced Search page is displayed.
Select events from the Search for dropdown list.
From the first selection box (criteria selection), click the down arrow, and select severity.
From the second selection box (comparison selection), click the down arrow, and select is.
In the third selection box (value selection), the available values for a given criteria or comparison combination are given. Select Informational.
In the third selection box (value selection), the available values for a given criteria or comparison combination are given. Select Normal.
Click [Add] to select Normal severity.
From the first selection box (criteria selection), click the down arrow, and select severity.
From the second selection box (comparison selection), click the down arrow, and select is.
In the third selection box (value selection), the available values for a given criteria or comparison combination are given. Select Normal.
Click [Add] to select Normal severity.
From the first selection box (criteria selection), click the down arrow, and select event time.
From the second selection box (comparison selection), click the down arrow, and select older than and select 30 days.
(Optional) Click [View] to view the search results.
Click [Save As] to save the event collection.
In the Name field, enter a name for the collection, such as Delete Insignificant Events.
Under Place in Folder, select to save the collection in Events by Severity to have it available to other users.
Click [OK] to save the collection, or click [Cancel] to cancel the save operation.