If I understand correctly, when I do an incremental backup and a file has been removed from the client, the server marks it as inactive which makes it eligible for purging when the expire time has passed.
Using the dsmc
client on a linux server I can see the list of inactive files, but no information is shown on how long they will be kept.
How can I know exactly when a specific inactive file will expire? Also: where do I configure the expire time and how do I see which value it is currently set to?
Expiration time for a specific file is defined in MGMT class to which it belongs when file was backed up. Here is detailed explanation how it works in TSM: https://www-304.ibm.com/support/docview.wss?uid=swg21224145
You can get information about each file on server using SQL Query in dsmadmc:
More examples here: http://thobias.org/tsm/sql/#toc155