What is the best way to take the Secondary DSS offline for maintenance without stopping client access to iSCSI targets?
SECONDARY DSS --> Stop via Failover manager, Shutdown
--> Maintenance period
Than Power on the Secondary, check the volume replication
When all volumes are synchronized, start Failover on secondary.
Yes, with the Secondary system this is what you would do then you can failover from the Primary system to the secondary then you can take down the primary then once back up perform the Sync and then wait then Failback.