PowerStore: Pre-upgrade Health Check (PUHC) detects replication is in a state that prevents NDU
Summary: Pre-Upgrade Health Check (PUHC) detects that there is a replication session in a state that prevents NDU.
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Symptoms
The Pre-Upgrade Health Check (PUHC) detects a replication session in a state that prevents NDU. The PUHC will fail with the message "Found replication sessions in state that may cause upgrade failure. Please for all replication failover to finish before retry, or contact your service provider to investigate. (replication_session_state) 
The health check is an off-release PUHC check that is contained in the Health Check thin package For additional Info section see KB 000192601 PowerStore: How to Check the Health of the Cluster Before Software Upgrade Using Pre-Upgrade Health Check and System Check.
Cause
If multiple replication session are unable to complete, NDU will freeze in the middle of the upgrade and not be able to complete. This PUHC check detects the issue and blocks the NDU from starting.
Resolution
- Check the status of the replication sessions.
- If any are not in completed state, pause them.
Affected Products
PowerStoreArticle Properties
Article Number: 000214505
Article Type: Solution
Last Modified: 14 Jun 2025
Version: 3
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