Everytime you upload a file to b2evolution, it calculates and saves an unique code based in the content of that file. By storing those codes in the database, is possible to compare them and detect which files are identical copies in between all the files uploaded to the user file system. Please, consider that this duplicity has nothing to do with the name of the files, because the content of the files is used as comparisson pattern instead of their name. Also, files with identical names, in different folders, could not be shown in this table as duplicated if their content are not exactly the same.
There is a particular case that needs to be highlighted here, because it lets you detect inconsistency states in your database between the files recorded and those that are phisically stored in the disk. This way, when a file is stored in the database, and the collection which this file belongs has been deleted, the column Icon/Type shows the phrase Not found instead of the file icon or thumbnail, an inconsistency has been detected.
Created by • Last edit by on Feb 09, 2014