amazon web services - AWS Placement groups -


according aws placement group required able utilize 10gbps network performance. given instances required placed in same availability zone placement group, sounds risky. ex, unavailability of 1 availability zone bring down infrastructure. considering risk, why use placement group?

placements groups, documentation states, applications needs fastest possible network speeds between instances, , because of instances can't span availability zones.

however, because have of machines in placement group doesn't mean can't have duplicate set of machines in placement group in separate az or separate region dr / redundancy needs.


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