OceanStor 9000 data structure

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Unfortunately these details on data structure cannot be disclosed. The data structure of OceanStor 9000 is patented and confidential.

Other related questions:
Data recovery speed of OceanStor 9000
Data recovery speed of OceanStor 9000: 1 TB/h

Computing data distribution for OceanStor 9000
Data distribution for OceanStor 9000 is computed by CA using the HASH algorithm based on the FID of a file and the offset and length of the current operation.

Introduction to OceanStor 9000 data mirroring
OceanStor 9000 data mirroring means that if the protection level of a directory is N+M, M+2 copies of metadata of files in the directory are stored in mirrors. When data is written to a file on OceanStor 9000, metadata for this file and multiple mirrors of metadata are generated and then written onto disks on OceanStor 9000 simultaneously. In total, M+2 data is written onto disks.

Storing redundant data on dedicated disks or nodes or providing redundancy between disks during data protection on OceanStor 9000
OceanStor 9000 does not store redundant data on any dedicated hot-spare disks or nodes for data protection. All storage nodes are provided for the same purpose. Raw data and redundant data are evenly stored on all nodes and disks of OceanStor 9000 which are available as recovery resources.

What's the data recovery speed of OceanStor 9000?
The data recovery speed of OceanStor 9000 is 1TB/h.

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