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Advanced O&M Command Reference

OceanStor 2800 V5 V500R007

This document is applicable to OceanStor 2800 V5. Based on the CLI, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.

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show ddp ratio

show ddp ratio


The show ddp ratio command is used to display saving information about the deduplication module, including the data quantity before deduplication, data quantity after compression, and the space occupied by deduplication metadata.


show ddp ratio domain_id=? controller=?





domain_id=? ID of the domain that you want to query.

To obtain the value, run the "show file_system general" or "show lun dedup_compress" command.

controller=? Controller ID.

The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C".


Developer view

Usage Guidelines

  • Before running this command, confirm that you have selected the correct domain ID.
  • When runnning this command, specify a controller ID.


To check the deduplication and compression statistics about domain "0" and the space occupied by metadata.

developer:/>show ddp ratio domain_id=0 controller=0A
In Deduplication : 178586036KB
Out Deduplication : 59123436KB
In Compression : 0KB
Out Compression : 0KB
Meta Space : 2251180KB

System Response

The following table describes the parameter meanings.



In Deduplication

Data quantity before deduplication.

Out Deduplication

Data quantity after deduplication.

In Compression

Data quantity before compression.

Out Compression

Data quantity after compression.

Meta Space

Deduplication metadata space size.

Updated: 2020-01-17

Document ID: EDOC1000181575

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