Collecting and saving statistical data

Quantellium collects and stores all types of data from any device that supports SNMP. This data is important for trend analysis, performance planning or problem solving. The stored data can be displayed graphically for up to one year.

The collected and stored data depends on the type of device (class). For example, the CPU usage and load of the network interface are monitored for servers; for switches, only the network load is measured and stored. By adding own data collectors to a class, other data can also be collected and displayed.

Round Robin Databases (background info)

Quantellium saves time-series SNMP data, to Round Robin Databases (RRD) and uses RRDTool to build the graphs. The main advantage of an RRD is that its size always remains constant, whereas in linear databases, the size of the database increases as new data is always appended at the bottom of the table.

Quantellium keeps collected data up until one year in the database.

There are several ways to open and display a graph.

A. Through a device’s right-click menu:
  1. Open the map that contains the device from which you want to open a graph.
  2. Right-click the device’s right-click menu
  3. Select Pinned sDCs and select a graph description

B. Through a device’s dashboard page
  1. Open the map that contains the device from which you want to open a graph.
  2. Right-click the device’s right-click menu and select Dashboard OR double-click on a device.
  3. Click on one of the available Data Collector icons in the Real-time SNMP Data collectors pane.

C. Through the Running sDCs page
  1. Log on into the system with at least Operator rights.
  2. Select Data collectors | Running from the main menu on the left
  3. Find the device, from which you want to open a graph.
  4. Select one of the available x-axis ranges

An example of a historical statistical graph

  • Yellow ellipse: The Y-axis is automatically scaled and can not be adjusted. However, the text on the Y-axis can be changed.
  • Green ellipse: The X-axis can be adjusted from “Last 60 samples” to “1 year”. The Top-x series that is displayed is calculated (averaged) over the specified X axis range. Series that do not fall in the Top-x category are simply omitted.
  • Purple ellipse: The standard X axis varies from a time in the past to the present. You can also specify a different time range by clicking the control and using the calendar widget.
  • Blue ellipse: You can add the currently displayed chart to a dashboard for easy access in the future by selecting a dashboard name from the drop-down menu.

Customizing graphs

Graphs can be slightly adjusted using the controls on the Customize tab. This tab contains controls that allow you to enable or disable series, define serial labels, types, and colors. You can also define the title of the chart and the y-axis. Your custom settings are used as preference instead of the default settings! The screenshot below shows an example.

Do not forget to save your settings! You can return to the default settings simply by deleting your custom settings.