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@colleen_fun_181665 At the technical level, it is possible to run multiple Docker instances on 1 physical host but we don't recommend it and is not a supported configuration because the DSE instances will be competing for the same physical resources. More importantly, it introduces a single point of failure. For example, if the host has a hardware failure, all the nodes running on that host will be affected.
We only support 1 Docker instance per physical server. Cheers!
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