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docs/website/docs/dlt-ecosystem/destinations/filesystem.md

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 You will also notice `init` files being present in the root folder and the special `dlt` folders. In the absence of the concepts of schemas and tables in blob storages and directories, `dlt` uses these special files to harmonize the behavior of the `filesystem` destination with the other implemented destinations.
 
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 **Note:** When a load generates a new state, for example when using incremental loads, a new state file appears in the `_dlt_pipeline_state` folder at the destination. To prevent data accumulation, state cleanup mechanisms automatically remove old state files, retaining only the latest 100 by default. This cleanup process can be customized or disabled using the filesystem configuration `max_state_files`, which determines the maximum number of pipeline state files to retain (default is 100). Setting this value to 0 or a negative number disables the cleanup of old states.
 
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