Choose time constraints for your NTA data view

Date Range . Choose or define an overall window of time network activity data.

注: Detail rendered in graphs depends on the time window you choose (Date Range) along with how long your system retains raw, hourly, and daily time-series data (NTA data collection and Data Retention settings). NTA graphs network activity as time-series averaged over daily intervals, hourly intervals, or over shorter periods (raw). Raw data interval is defined by the data collection interval in NTA settings.

重要: If you choose a time window outside of your NTA default data retention limits (8 hours for Raw and 10 days for Hourly, for example) your graph will default to an interval detail of Daily.

Detail Revealed with Default Retention Settings

Over time, the NTA collector cleans up older data. Eventually, collected data is combined into daily totals at the rates shown in the following table. If your site's mission and database capacity allow for more detailed data be retained for longer periods, increase the default retention settings in the NTA Settings dialog (SETTINGS menu > NTA Settings).

Report Time Window Selection

Data Interval Shown in Graph (default retention settings)

Example

0 – 7 hours

Raw

  • Data interval = every two minutes.
  • Default data retention = 7 hours plus the current fraction of an hour (unless extended in NTA Settings).

Top Applications observed over the last 30 minutes (raw)

more than 8 hours within the past 9 days

Hourly

  • Data interval = every hour.
  • Default data retention = 9 days plus the current fraction of a day (unless extended in NTA Settings).

Top Senders over the last day (hourly)

10 days or more

Daily

Data interval = every 24 hours.

Daily is also the Archive data interval.

Top Protocols over the last 10 days (daily)