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6.4 Log Settings
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The time for keeping of the data is determined by the two following parameters:
• Data for the high resolution — data with the high resolution (3 seconds sampling
rate). The time for keeping is given in weeks. This data represents the majority of
the stored data.
• Low resolution data — data with low resolution (1 hour sampling rate). This data
occupies much less space than the data with high resolution but its accuracy is
sufficient for observing longer time period (e.g. 1 week and more).
Thanks to their small size, the data with small resolution can be kept for longer
time — time is given in months.
Log keeping time Time of storing (respectively maximum age) of the log files Error
Log, Connection Log, HTTP Log, Mail Log and ICQ Log. Given in
days.
Captured objects maximal age Time for storing of the captures objects (i.e. informa-
tion, which is displayed in the window Scanned data — see chapter 7.4). Given in
days.
• Keep captured WWW pages — time for storing the captured WWW pages. WWW
pages can contain big amount of graphics and other objects, therefore it deals
with high volume data.
• Keep captured FTP sessions — time for storing the information about connections
to the FTP servers. Only information about the relations is stored (server, user,
downloaded or uploaded files), not the transferred files. The volume of the data
is therefore small.
• Keep captured e-mails — time for storing the captured E-mail messages. The
messages are stored also with the attachment and can therefore represent high
amount of data.
Daily cleaning should be started at Startup time for automatic database maintenance
(performed once a day). The main goal of this action is to remove the data, which is
older than the set values (see the options described above).
This maintenance can take a long time (in the worst case even several tens of minutes
— depends on the size of the stored data and speed of the used computer). During
the maintenance time it is not possible to view the currently processed log (in the
appropriate window a message saying the maintenance is running, will appear). For
this reason, the maintenance should be scheduled to the time, when there is low or
even no traffic in the network (e.g. during the night).