SATEC EM920 Operation Manual - Manual (Page 157)

Chapter 8 Retrieving and Storing Files Archiving Files
EM920 Power Quality and Revenue Meter 157
Each table row is provided with the device identifier that you
can define in the meter database (see
Creating a New Site for
your Meter ).
Archiving Files
Microsoft Access databases tend to grow fast. Databases
above 0.5 Gigabytes can drastically slow down file
operations.
To avoid enormous growing files, you can either periodically
change the target database, or use the Upload Scheduler’s
file archiver to automatically move older data to archives.
The Upload Scheduler archives files upon a weekly, monthly
or yearly schedule. When archiving data, a new database is
created to where older data from your present database with
the expired archiving date is moved.
An archive file keeps the original database name to which the
date of the oldest database record is added, so you can easily
identify your archives and work with them as you work with a
regular database.
To provide a schedule for archiving files:
1. When defining a schedule for uploading files from your
meter, click on Configure or double click on the site
row.
2. Click Auto Archive.
3. Check the Enable box and select a periodic schedule
for archiving your files for this site.
4. Click OK.
To avoid archiving partially updated data, archiving is
performed in a day after expiring a scheduled period and not
before 2 hours a.m.