How many bytes are needed at the hard disc to save a value or alarm?

This table shows the bytes necessary to store an alarm or a value in the different types of archiving in WinCC OA.

Please note that the given numbers are only average values.
The disk space required may differ, e.g. if the alarm text for a DP element contains a lot of characters, more space is needed.
 

Type of archiving

Alarm

Value
NGA InfluxDB 115 15
NGA PostgreSQL 380 132
NGA MS SQL 200 105
HDB/RAIMA(Value Archives) 400 57
RDB(Oracle) 713 84
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Archiving
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