I want to use the new Historical Data Download Scheduler to refresh my datas everyday as true backfill and to overwrite the eventual realtime collected datas. My data source is LMAX.
To do so I created a daily task for downloading the last 2 days, and use the Data removal option, but the wiki is a bit confusing:
I use the 2nd option (Delete only the data of selected...), and it seems to do what I want, but each time it creates a backup, which piles up days after days and uses a huge amount of disk space for nothing.Data removal options section allows to specify the types of data for the selected symbols to be removed from the MultiCharts database before downloading the historical data.
- Delete nothing to keep the historical data for the symbols stored in the database (only missing historical data will be downloaded).
- Delete only the data of the selected type and time interval to delete the symbols’ historical data for the selected data range, resolution and quote field.
- Delete the data of the selected type completely to delete all the historical data stored in the database for the selected symbols.
Am I doing things correctly and how do I disable the automatic backup ? if I choose the 1st option (Delete nothing), no backup is made, but my realtime data is not overwritten.
Thanks for your help !