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kirand
Contributor
Contributor

VSAN IO read request servicing

Hi, I just would like to understand on how VSAN process read requests.

Say I have a 3 node VSAN cluster and a VM with FTT=1, the VMDK is replicated on node-1 and node-2. If there is a burst of read IO to this VM, does these requests will be distributed between node-1 and node-2 or does these requests will be serviced by the node where VM is residing?

Is there any algorithm takes care of looking at outstanding IOs on one node and redirects the read requests to other node where replica is hosted?

Thanks

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