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# Cancel file migration import session

Network-attached storage is a file-level storage architecture that makes stored data more accessible to networked devices.

## Prerequisites

See Roles and associated permissions to determine the user roles that can perform this task.

## About this task

See Understanding PowerMax File for storage systems for an overview of PowerMax File.

For the selected import session, the cancel operation results in the cessation of data transfer between the source array and PowerMax. All data import to PowerMax is removed. You can rerun the import later, but you cannot resume from where the import stops.

## Steps

1. Select a storage system that supports PowerMax File migration.
2. Select Data Protection > File Migration.
3. Select File Imports.
4. Optional: Select Force Cancel checkbox.
5. Select a session and click Cancel.
   If the source array is unresponsive, selecting Force Cancel terminates the imports without rolling back access to the NAS Server on the source array. Manual intervention may be required on the source array.
6. Do one of the following:
   - Click Run In The Background to perform the operation in the background.
   - Expand Run In The Background, and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs.