Hello,   Yes, the Dell PS Series SANs prioritize incoming server traffic over replication traffic.  Replication is done from a hidden snapshot so consistency is never a concern.   If you have all 8 running at same time, not all 8 will be serviced at the same time.  To minimize performance impact.  I typically like to stage mine vs all at same time.    Hopefully that answers your question?   Regards, Don  
We have two 6610X’s, each in it’s own group.  Any data on Group A is replicated to Group B.  Any data on Group B is replicated to Group A.  This is done to ensure data safely exists in opposing groups in event of failure (and in addition to our VM backups). My question is: with 8 1TB volumes per group, can they ALL be replicated every X hours to destination group without causing significant storage bandwidth issues?  Do the EQL’s prioritize/throttle replication traffic at a lower level to ensure connected virtual hosts have highest priority? The replication deltas are very small (~5-20GB) and happen almost immediately considering we’re using 10GBE Dell switching. Thanks.
Replication bandwidth priority between groups