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Depending on the type and state of replication, a replication session can continue when upgrading the PowerStore system (NDU). During PowerStoreOS upgrades, asynchronous replication sessions are temporarily paused and display the status Paused for NDU (see Figure 57Figure 57). The replication resumes after the upgrade has successfully finished.
When a synchronous replication session was active when the NDU was initiated, it will keep running. Paused synchronous replication sessions remain paused and can resume after the NDU is finished.