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We believe that proper management of network resources is not just a matter of quick resolution of various urgent problems. A responsible system administrator should apply proactive practices to predict any faults and avoid them.

In many cases problems have roots that can be seen long before the actual fault. For example, if you experience a constant growth of number of customers visiting your web site, one day you will probably notice 100% CPU usage on your web site or data base system and will need to do an urgent hardware upgrade. If you could take a look at the CPU load parameter from time to time and noticed that it was growing constantly, you would probably prepare for that upgrade in advance.

So, in general the problem is that when you design your monitoring system by specifying various monitors, warning and error levels, notifications, etc., you can take in account only some simple fault situations. There are many situations and tendencies that can not be treated as faults and that are hard to specify in terms of warning levels. Yet, the proper examining of them can allow you to predict the tendencies of the overall system development and possible problems.

The users of Server Supervisor can perform such periodic examination using reports. The product provides the following types of reports:

• Simple monitor statistics. This report shows the values of a selected monitor during any specified period of time. You can also choose the scale to get more or less details.
• Resource uptime percentage. For a specified time period it shows the percentage of time the selected monitor was in each state.
• Summary by week days and hours. With this type of report you can get average statistics for particular days of week or day hours. For example, you know that your web system experiences highest load on weekdays around 4:00 PM. You can create report for last 5 days for the period between 3:00 PM and 5:00 PM to see the average values of CPU load monitor.
• Group reports. Resource uptime and summary reports can be created for groups of monitors.

We thought about many other types of reports that could be useful in various specific conditions. Finally we decided to start with a few types mentioned above and wait for a feedback from our users. Of course, we tried to design the whole system in a way that would allow us to add more types of reports easily. So, your suggestions are very welcome.

You can specify parameters of reports that you want to receive periodically and Server Supervisor will send these reports to you by email at the specified date and time. For example, you can configure it to send daily reports for a group of monitors for your web site every day at 9:00 AM. This way you will receive the information about last 24 hours every morning.