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300-610 · Question #326

An engineer is deploying a Fabric Interconnect within a data center SAN over a Fiber Channel link in end-host mode. The hosts are connected through multiple vHBAs, each of which has been hard-pinned t

The correct answer is C. The vHBAs go down and remain down until the uplink is restored because the system cannot. In Fibre Channel End-Host Mode with static pinning, each vHBA is locked (“hard-pinned”) to its assigned uplink port. If that physical uplink fails, there’s no automatic repinning to another uplink-so the vHBA stays down until its original path comes back up.

Storage Network Design

Question

An engineer is deploying a Fabric Interconnect within a data center SAN over a Fiber Channel link in end-host mode. The hosts are connected through multiple vHBAs, each of which has been hard-pinned to a specific Fibre Channel uplink. What happens to the vHBAs if the Fibre Channel uplink port fails?

Options

  • AThe vHBAs go down and remain down until the fabric interconnect mode is changed to switch
  • BThe system performs repinning to an active uplink, and the vHBAs remain operational.
  • CThe vHBAs go down and remain down until the uplink is restored because the system cannot
  • DThe vHBAs remain operational because SAN pin groups are ignored in end host mode.

How the community answered

(18 responses)
  • A
    6% (1)
  • C
    89% (16)
  • D
    6% (1)

Explanation

In Fibre Channel End-Host Mode with static pinning, each vHBA is locked (“hard-pinned”) to its assigned uplink port. If that physical uplink fails, there’s no automatic repinning to another uplink-so the vHBA stays down until its original path comes back up.

Topics

#Cisco UCS#Fabric Interconnect#Fibre Channel#vHBA pinning

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