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by Duncan Epping

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global dedupe

#105 – How do I enable vSAN ESA Global Deduplication in 9.0?

Duncan Epping · Oct 20, 2025 · Leave a Comment

For this episode I invited our raging reporter on scene Pete Koehler! Pete is going over all the benefits, requirements, and limitations around vSAN ESA Global Deduplication. This feature was released with 9.0.1 and is available per request as discussed in this ⁠blog post⁠. If you want to get access make sure to sign up using the form in the ⁠blog⁠.

Just as a summary, right now vSAN ESA Global Deduplication requires:

  • Version 9.0.1
  • 25GbE (or higher) networking
  • Telemetry needs to be enabled (CEIP)

There are a few limitations:

  • Minimum of 3 hosts and maximum of 16 hosts in a cluster
  • Does not support the use of Stretched Cluster functionality
  • Cannot be combined with data-at-rest-encryption

Listen via Spotify (bit.ly/4oaCbnS), Apple (bit.ly/4np3slG), or the embedded player below:

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About the Author

Duncan Epping is a Chief Technologist and Distinguished Engineering Architect at Broadcom. Besides writing on Yellow-Bricks, Duncan is the co-author of the vSAN Deep Dive and the vSphere Clustering Deep Dive book series. Duncan is also the host of the Unexplored Territory Podcast.

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