Manually starting threshold migration
Use the dsmautomig command to reduce space usage to the low threshold on your file system before it reaches the high threshold. If space usage exceeds the low threshold when you start threshold migration manually, eligible files migrate until space usage drops to the low threshold.
About this task
For one or more storage pools that are configured in a file system, the low and high thresholds defined for a file system also apply to each storage pool in that file system.
Each storage pool is monitored and managed separately. Running automatic migration on one pool until it reaches the low threshold does not result in a low threshold for the entire file system. To reach low threshold for the entire file system, issue the dsmautomig command for the entire file system (without a storage pool argument). Low threshold is enforced for each storage pool in that file system.
Files are automatically premigrated after threshold migration completes. There must be files that are eligible for premigration and the number of premigrated files must not exceed the premigration percentage. The status of the premigration process is displayed in the Threshold Migration Status window.