All tables imported to and exported from Storage go through Files.
When a table is imported into Storage by any means (manually, through an extractor, or as a result of running an application), the CSV file is first stored in Files and only then imported to an actual table. This means that the Storage Files contain a history of data uploaded to the Storage Tables. It is useful mainly in the two following cases:
Every time a table is exported from Storage, the process is reversed: first, a file is created in Files and then it is actually downloaded from there. This does not apply when exporting Storage tables manually though. Beware, however, that due to the nature of database exports, the exported table may be sliced and require substantial effort to reconstruct. To make sure your tables are exported as merged files, always use the Export feature in the Action tab of the table detail: