Additional considerations for Linux exclusions

Note the following considerations when applying exclusions to Linux clients:

     By default, the system excludes certain Linux directories from backup. For details, see Default exclusions from file-level backups of Linux clients.

     Exclusions for Linux clients omit the files from the backup but do not prevent the system from checking these excluded files for changes when identifying data for incremental or differential backups. If you are excluding directories containing large amounts of highly changeable data, it is recommended that you also implement the exclusion in KB 816. 

     The maximum number of files you can exclude is 256. The maximum number of directories you can exclude is also 256. The maximum total number of exclusions is 512. If these limits are exceeded, the list is ignored and the backup runs without excluding files.