Hey!
I’m starting to use InfluxDB OSS 2 and I have a couple of questions for you 
Using Python I write/post data in Influx, but where is the data saved? Locally?
And then in what format?
Will the data that I view in Data Explorer be deleted?
Thank you so much!!
Hi @alex2,
So the data journey goes a little like this:
Python code (json, dict, dataframe) (your call) → converts to line protocol → This data is then read by InfluxDB and stored on disk via the Influx storage engine. You can find more information on this here: InfluxDB storage engine | InfluxDB OSS 2.1 Documentation
We abstract this up to “buckets”. The data stored in your buckets will be bound to a retention policy. If your bucket retention policy is unlimited then your data will not be deleted. If you had retention of 1 day then any data older than that 1 day period would be removed.
The data is stored normally under the engine folder of your influxDB instance as tsm, tsl and idx files which are not human readable.
Thank you @Jay_Clifford ! 
I haven’t set the retention policy, so I think that there is a default value. How i can see and modify that? 
It is important because I would monitor a measure for at least 1 month and after, use this data.
About the size of the archived data, I monitored the change of the size file every hour to make an estimation of the space needed for 1 month: approximalty 3 MB per hour and then 2 GB in a month. Does this make sense? Or there are other parameter that i need to consider in order to estimate it? 
