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Can post process compression work without deduplication?

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Applies to

  • Storage efficiency
  • Compression
  • Deduplication

Answer

  • Postprocess Compression Can Run Without Deduplication
  • Deduplication must be enabled initially to enable compression. Note: Directly enabling compression will not result in space savings
  •  After enabling compression, deduplication can be disabled, and postprocess compression will still function and provide space savings.
  •  Postprocess compression will read, compress, and rewrite data blocks during scheduled times.

Example :

1. Enable Deduplication and Compression: (Prerequisite to enable compression is that Deduplication should be enabled before enabling compression )

::>volume efficiency modify -vserver <vserver_name> -volume <volume_name> -dedupe true -compression true

2. Disable Deduplication: volume efficiency modify -vserver <vserver_name> -volume <volume_name> -dedupe false

3. Run Postprocess Compression:  Compression will continue to run as scheduled, compressing data blocks and providing space savings.

 Monitor the progress using: volume efficiency -vserver <vserver_name> -volume <volume_name> -fields progress

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