Please consider moving this question as-is (no need to recreate) to the proper forum for maximum visibility.  Questions written to the users' own "Discussions" space don't get the same amount of attention and questions can go unanswered for a long time.  You can do so by selecting "Move" under ACTIONS along the upper-right.  Then search for and select: "Symmetrix Support Forum" which would be the most relevant for this question.   What version of OneFS are you running?  In the meantime, is node 1 on both clusters participating at all in the SyncIQ session? If it is what I suspect, the throttle daemon resides on node 1 on the cluster.  If it isn't associated with the respective SmartConnect pool that you are using for replication, then you would need to move it to another node.  It requires engineering review.
Sorry guys, another Q..... I've found a previous posting for a question very close to mine - but just cant seem to make the same resolve, so heres the info:  Two isilons on same subnet and domain, both members of the domain, both accessible by normal methods. SyncIQ just will not give me any joy on a policy:  "SyncIQ error connecting to daemon (bantwidth, throttle, pworker). Please verify all SyncIQ daemons are running. Unable to connect to throttle host for last 1701 seconds."  Both are pingable, web portal accessible - I'm not sure how to test/find out if the daemons are running.  NOTE: Both system are static smartconnect resource zones. Though I've dedicated a node and ip range for the primary (Policy holder) isilon to allow for bandwidth - if which I've set "Run the policy only on nodes in the specified subnet and pool, then select the specific pool i've created.  Target is set to connect to any nodes in the cluster  Uhm....direction to test if the daemons are running? or possible something else to try?  Many thanks!!! __LEO__
SyncIQ - error conecting to daemon...unable to connect to throttle host