The spacereclaimer start command starts the SnapDrive space reclamation process.
sdcli spacereclaimer start [-m MachineName] -d MountPoint [-t TimetoRun]
-d MountPoint specifies the LUN mount point, volume name, or CSV reparse point on which you want to start Space Reclaimer.
-t TimetoRun specifies the amount of time Space Reclaimer will run on the specified LUN. Specify a time from 1 to 10080 minutes (7 days).