To maintain collected performance data

1. In the Symantec Management Console, on the Home menu, click Monitoring and Alerting.

2. In the left pane, click Monitoring and Alerting > Monitor > Settings > Monitor Server Settings.

3. On the Monitor Server Settings page, click the Purge Maintenance tab.

4. Configure the following options:

   Detailed data	How long you want to store detailed numeric performance data before it is purged and summarized into hourly values.
   Hourly summaries	How long you want to store hourly summarizations of numeric performance data before it is purged and summarized into daily values. The value that is used is the Detailed data value plus the Hourly summaries value.
   Daily summaries	How long you want to store daily summarizations of numeric performance data before it is purged from the database. The value that is used is the Detailed data value plus the Hourly summaries value plus the Daily summaries value.
   String metric data	How long you want to store string data before it is purged from the database.
   Process data	How long you want to store Process data before it is purged from the database.
   NT event data	How long you want to store NT event data before it is purged it from the database.
   Command timeout	How much time should be allowed to pass before a purging timeout is declared.
   Perform daily purge at	What time of the day the database purging should occur.

5. Click Save changes.