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Release 9.0 removes two unused Site-to-Cloud (S2C) telemetry fields and the Round-Robin Database (RRD) from the Controller. The change is transparent; no action is required during or after the upgrade.

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What Changed

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Retired S2C Telemetry Fields

Two telemetry fields that tracked S2C connection usage are removed: Both fields were instrumented in the Controller but were never used by any billing plan or reporting workflow. No billing plans, dashboards, or monitoring workflows are affected by the removal.

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Removed RRD from the Controller

RRD (Round-Robin Database) was a legacy time-series storage mechanism in the Controller. It was a long-standing source of technical debt and contributed to Controller stability issues. With the unused S2C telemetry fields retired, nothing on the Controller still depends on RRD. Release 9.0 removes it.

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Impact

This change is transparent. No action is required during or after the upgrade.

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Before and After