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EPO Maintenance
11.1 Maintenance, backup and restore of the database
11.1.1 EPO database
The EPO data exist from two separated kept data collections:
1) the measurements (probe results)
the measurements are kept in a so-called flat file database. Exhaustive testing has
shown that this determines little difference for the performance, but that simple
administration of the data strongly increases as a result. The following directory order
under “… \ EPO \ EPOServer \” data is apprehended:
- per month a separate directory (yyyy-mm)
- below by probe a separate directory (DK_EPO_K<probe name>)
- possibly below by sub-directory the different probe information components
- below per day the information in a separate file.
Double click on an edf-file will start the data viewer (the same data viewer that can
be invoked from within the EPO Gui by right clicking a data node in the Business
Tree and selecting “View Measurements”).
2) the tree definition, screen definitions
this data is kept in an sql-based database:
(default) c:\program files\the early warning company\epo\data\epo.fdb
11.1.2 Backup
It is easy to make a backup of EPO: just make a copy of the complete EPO directory. Use a
tape or other backup device.
The EPO data files (EDF) can be copied during normal operation (no read locks).
11.1.3 Restore
Just place the files from the backup device to their original destination.
11.1.4 Disaster recovery
To recover after a clean windows installation:
Run the standard setup with the same components and specified installation path as the
original installation.
EXCEPT: DON’T START the services (last option of the third installation step – See
§ 3.5 section 3 )
Just place the files from the backup device to their original destination
Start the epo services
11.1.5 Compress measurement database
The EPO measurements files can be compressed. Choose menu Administration \
Measurement database. Choose an archivable month and select the Archive-button. As a
result the many files are compressed to one remeaning file in the probedata directory with
extension eda (Epo Data Archive).
© 2008 C-it
Version 5.0
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