How many path (s) will be used by ESXi server to access VMFS?

ESXi Server has one HBA with dual port and configured with zoning and path selection is set to round robin.

How many path (s) will be used by ESXi server to access VMFS?

A.
2

B.
3

C.
1

D.
4

Explanation:
Round Robin alternates paths continuosly – only really utilizing one path. Round Robins USE- CASE is usually when working with active/active SAN Controllers.

3 Comments on “How many path (s) will be used by ESXi server to access VMFS?

  1. Chuck Luttor says:

    For Round Robin path selection to be effective, active active paths are required. Although IO operation initiation will be alternated between paths, with any heavier IOP loading there will be occasion for the ESXi server to be using both paths simultaneously. Neither the host nor the HBA require the operation on one port to complete before the IO operation on the other port commences. While a single IO operation always uses one port or the other, the ESXi server uses both ports — sometimes consecutively, sometimes simultaneously. IMO the answer should be A. 2.


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