Daily Truncation

The fs_tierman TSM daemon kicks off policy-based truncations each day after midnight. In this case the call is:

This processes each defined policy class within StorNext until all policy classes have been completed. After the fspolicy has been run against all policy classes, the daemon waits until the next day to run them again.

Each of these class-based truncation policies truncates eligible candidates until either the min-use mark, if enabled, or the low-water mark is reached or it runs out of truncation candidates. At that time it terminates execution.

An eligible truncation candidate is a file that has not been accessed during the truncation mintime interval.