User's Manual

Components 391
Figure 195 Options Dialog Box - Logging Tab
Database The data collected by 3Com Network Director is logged using RRDTool.
See “
RRDTool” on page 395 for more information. This utility stores the
data in round robin databases.
A round robin database is simply a file on disk, with extension .rrd. A
new database is created for each monitored device or link.
All databases are located in the 3Com Network Director install directory,
in a sub-directory called logging e.g.
C:\Program Files\3Com\3Com Network Director\logging
Located in this directory is a file called mapping.txt. This CSV file contains
an entry for every device or link that has been monitored by 3Com
Network Director now, or in the past. You can use this file to locate the
database for a given device or link. The mapping file format is described
in “
Mapping file format” on page 395.