A rare defect in Autonomous NearSync with 1–15 minute RPO can leave extent groups on the target cluster with reduced data resiliency, potentially causing protected entity recovery to fail during a real disaster event. Both Protection Domain-based and Prism Central-based DR configurations are affected. Symptoms include: Prism Element displays an ExtentGroupDataResiliencyAtRisk warning on the target cluster with the alert Message:
ExtentGroupDataResiliencyAtRisk warning: “cluster can tolerate a maximum of 0 node failure(s).”
Affected AOS versions:
- 7.5
- 7.3 and 7.3.x up to 7.3.1.2
- 7.0 and 7.0.x up to 7.0.1.14
- 6.10 and 6.10.x up to 6.10.1.14
Insights Discovery
- Customers with Pulse enabled send telemetry to Nutanix Insights. Any cluster exposed to this issue will automatically create a Discovery Recommendation in the Nutanix Support Portal.
- Look for Discovery D1-0133 — “Clusters with NearSync disaster recovery-protected entities may experience recovery failures and reduced data resiliency on the target cluster.” Check all Discoveries and follow the recommended actions.
- If Pulse is not yet enabled, refer to the Prism Web Console Guide or Prism Central Admin Center Guide to turn it on.
How to check if you’re affected
- To determine the AOS version of the clusters:
- Log in to both source and target Prism Element. Confirm AOS version via Username → About Nutanix.
- To determine if Autonomous NearSync is enabled:
- SSH into any Source or Target Cluster Controller VM (CVM) as the nutanix user: ssh nutanix@cvm_ip_address
- Run the NearSync parameter printer: nearsync_params_printer
- If Autonomous NearSync is active, output appears with fields like pd_name, cg_name, and current_retention_time_mins.
- No output means NearSync is not enabled and you are not affected.
| Fix versions, upgrade both source and target |
| Affected AOS Version | Fixed Version | Release Dates |
| AOS 7.5 | 7.5.0.5 and later | 9 Feb 2026 |
| AOS 7.3 / 7.3.x | 7.3.1.4 and later | 16 Feb 2026 |
| AOS 7.0 / 7.0.x | 7.0.1.15 and later | 24 Mar 2026 |
| AOS 6.10 / 6.10.x | 7.0.1.15+ or 7.3.1.4+ | ar / Feb 2026 |
No workaround available. Use Life Cycle Manager (LCM) to upgrade. Nutanix recommends upgrading to the latest release in your version family.
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