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https://issues.apache.org/jira/browse/HDDS-17134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang resolved HDDS-17134.
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Resolution: Fixed
> Document OM and SCM HA with more than 3 nodes
> ---------------------------------------------
>
> Key: HDDS-17134
> URL: https://issues.apache.org/jira/browse/HDDS-17134
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: documentation
> Reporter: Siyao Meng
> Assignee: Andy Huang
> Priority: Major
> Labels: pull-request-available
>
> Update OM-HA.md, SCM-HA.md (and the zh versions) and the Listener OM design
> doc:
> * A fault-tolerance table: 3 nodes tolerate 1 failure, 5 tolerate 2; an even
> count adds no tolerance.
> * Correct listener-om.md: "A setup with 2 voting OMs will not work as Ratis
> requires an odd number of voting members". Two voters work, they just
> tolerate no failure.
> * Adding OMs: every client configuration (clients, S3 Gateway, Recon, HttpFS)
> must include the new OMs before one can become leader (see HDDS-17126).
> * SCM: the extra datanode report load per added SCM, and the primordial SCM
> dependency in secure clusters.
> * Expected leadership transfer latency (until HDDS-17124 is fixed).
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