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The OceanStor 9000 records distribution information (metadata) about data fragments of all files and reads data from nodes according to the metadata. The OceanStor 9000 has a more advanced distributed file system that does not use independent metadata nodes but spreads metadata across different nodes. When an application attempts to access data, the OceanStor 9000 finds out the metadata corresponding to the target data, obtains the metadata, and reads data fragments from different nodes according to the locations indicated by the metadata. Then, data fragments are combined into the required files on the client.
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