Azure Local (Stack) Storage Network Configuration

Question

Hi,

I am trying to understand the rational of having Storage Replication Traffic on a management network and then having a dedicated storage network for all the storage traffic.

In the Azure console we have the following types;

Group network traffic types by intent Choose traffic types to group together on a set of network adapters and which types to keep physically isolated on their own adapters.

• Management traffic between this system, your management PC, and Azure; also Storage Replica traffic
• Compute traffic to or from VMs and containers on this system
• Storage (SMB) traffic between machines in a multi-node system

Is there a reason that storage replication traffic is separated from storage traffic by default? some set ups may have 25GB storage and 10GB Compute \ Management so it would make sense to have the replication on the Storage network in that scenario. That assumes that "Storage replica" includes the cluster volume replication.

Can you please provide some information on this and verify that the storage replica includes the volume replication for the node as I am struggling to find an article that states this clearly.

Many Thanks

Answer 1

As per https://learn.microsoft.com/en-us/azure/azure-local/concepts/host-network-requirements?view=azloc-24112

Storage replica uses non-RDMA based SMB traffic. This and the directional nature of the traffic (North-South) makes it closely aligned to that of "management" traffic listed above, similar to that of a traditional file share.

---

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin