Clarity is storing files in an unexpected folder, with the form of Files and and ID (Filesxxxxxxx, e.g.: Files5000001), instead of the expected Files folder.
There is a limit set in the CSA on how many files should a directory contain.
CSA > [server] > Properties > Documents and Search > File Store Directory Size Limit.
Release : 15.8.1
Component : CA PPM COLLABORATION (DOC & ACTION ITEMS)
Remove the 'File Store Directory Size Limit' (leave blank).