Qualis Audio Sentine, User Manual, Page: 84 / 108

78 User Manual
Purging and archiving repository data
Each daily log file in the repository holds about 13 MB of data; a month
of data is about 400 MB. The strategy for purging or archiving these
files is your choice – the Sentinel software doesn’t delete log files, and it
provides access to whatever files are in the repository.
Scheduled downloading of log data
In a production environment, you will want to schedule downloading of
data to the log repository, rather than relying on the browser to update
the repository.
The download service can be invoked independently, without the
browser being active. This allows you to perform the download in
scripts, or include it in scheduled batch operations. It provides reliable
archiving of continuous log data in a production environment.
This separate download operation uses the same Java applet as is
used to provide access in the Sentinel web interface. However, in this
case, it is invoked using Java Web Start (JavaWS). JavaWS is a stan-
dard part of the Java Runtime Environment, and it handles the trans-
fer of the application to your computer for execution (and caches it for
future use).
Invoking the download operation
The command for invoking the repository download operation is:
javaws -wait -Xnosplash http:// address /logrepository.jnlp \
-open " directory-path \ serial-number "
Where address is the IP address or DNS name of the Sentinel, direc-
tory-path is the full path to the log repository directory, and serial-num-
ber is the serial number of the Sentinel. (The serial number is displayed
on the Sentinel front panel as the last 6 digits of the MAC address,
and, in the Sentinel web interface, on the status line of the main meter
panel.)