# Exporting changes to the data repository
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You can export data and metadata changes, including POSIX metadata, from Amazon File Cache to a linked Amazon S3 or NFS data repository. Associated POSIX metadata includes ownership, permissions, and timestamps. To export changes from the cache, use HSM commands. When you export a file or directory using HSM commands, your cache exports only data files and metadata that were created or modified since the last export. For more information, see [Exporting files using HSM commands](exporting-files-hsm.md).

**Important**  
For Amazon File Cache to export your data to your linked data repository, it must be stored in a UTF-8 compatible format.

**Topics**
+ [Exporting files using HSM commands](exporting-files-hsm.md)