# Troubleshooting Amazon EFS

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/amazon-efs-user-guide.git)
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## Troubleshooting General Issues

* **Note**\
  RHEL 6.9 might be suboptimal for certain workloads due to [Poor Performance When Opening Many Files in Parallel](#open-close-operations-serialized).
* **Note**\
  Amazon EFS doesn't support Oracle Direct NFS.