Compression Rate IDPA DP4400

In IDPA all backup data is stored on the Data Domain, while only metadata about the backups is stored on the Avamar. This differs from a standalone Avamar that is not integrated with DD, in which case all data is stored on the Avamar.

So for IDPA, when asking about Compression and Dedupe, we are talking about features of the DD.

The below Dell reference states "The IDPA DP4400 delivers up to 20% more capacity than competitive 2U appliances and an average rate of 55:1 deduplication":

• https://www.dell.com/en-us/blog/simply-powerful-data-protection-for-midsize-orgs-lowest-cost-to-protect/

Here are some other helpful KBs that give a lot of detail about understanding these features and how to check them on your system:

• https://www.dell.com/support/kbdoc/en-us/000003886/86266-understanding-datadomain-compression

• https://www.dell.com/support/kbdoc/en-us/000064270/troubleshooting-poor-de-duplication-de-dupe-and-compression-ratio-of-files-on-data-domain-restorers-ddrs

You can run the "filesys show compression" cmd on DD to see the % of reduction: (click image to enlarge)

I hope this helps.

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