You can migrate files from your volumes according to high and low thresholds of space usage. With proper configuration, you can greatly reduce the chance of your volumes running out of space.
Threshold migration provides automatic control of space usage of the volume. You set the high and low space-usage thresholds that trigger the HSM for Windows client to automatically start and stop migration. You configure guidelines for migration candidates. HSM for Windows client uses those guidelines to choose which files to migrate, and when, to meet the space usage settings.
You can configure threshold migration with the Threshold Migration settings window in the GUI, or with the dsmhsmclc.exe command.