Whether WORM at the file level is supported and whether LUNs support WORM

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Only file system-level WORM is supported. Directory- or file-level WORM is not supported. You can manually enable a file system to enter the protection state. Alternatively, you can set the state of a file system to automatic protection. Determine whether the WORM feature is used when you create a file system. In the current version, LUNs do not support WORM but support compliance WORM at the file system level.

Other related questions:
Whether the WORM feature of the OceanStor V3 Series supports the file level
Only file system–level WORM is supported. Directory- or file-level WORM is not supported. You can manually enable a file system to enter the protection state. Alternatively, you can set the state of a file system to automatic protection. Determine whether the WORM feature is used when you create a file system.

How Can I Extend the Retention Period of WORM Files?
Linux is used as an example to describe the procedure for extending the retention period. Run command touch -a -t YYYYMMDDHHMM filename to modify the atime of WORM files. For example: touch -a -t 207010161510 file.

Whether the Dorado supports LUN copy
All Dorado series storage systems support the LUN copy feature.

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