Force certain entities to be VERY long term

Configuration
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Hey everyone!
Guess I have a two-part question here…

  1. How “long term” are the long term statistics? I mean, they must be truncated eventually, right? I was under the impression that HA made it safe to not auto-fill it’s own disk.

  2. If they are not indefinite, are we able to change retention periods for specific entities? It seems that simply changing the ‘purge_keep_days’ parameter for the recorder affects everything at once.

(Main reason: I want to track a custom sensor I created over, I don’t know, let’s say the next decade)

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5 minute statistics are purged after your keep days interval.

Hourly and daily statistics are never purged.

The total disk requirement for this does not grow at an excessive rate.

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That’s the doc I wish I had found :slight_smile:

For future googlers: “The long-term statistics table is never purged. Because it stores an hourly summary, only 24 entries are created per day.”