Storage calculator spreadsheet

[andrews]

See this post:

Disk Space Calculation

Determining the size of your database really does vary depending on your setup. There are a lot of variables to take into account. Our historian logs data by exception and has the ability to compress the data. So if a value hasn’t changed in 10 days nothing gets logged. So, there are 3 varibles to look at: Number of tags Rate of change - % of tags that change every scan cycle Compression - how the historian compresses the data We try our best to keep the size of the database to a minimum. S…