SAN heartbeat timeouts – multiple HBA

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When having multiple FC HBA adapters/ports connecting to SAN storage and you lose SAN datastore heartbeats/Lost access to storage messages.


Are these messages per HBA/port meaning if one of the paths is down these messages get logged and I/O traffic goes via other HBA/port?


Or for these messages to get logged there needs to be both HBA adapters/ports with connectivity issue to storage?


Are heartbeats sent from each HBA/port towards SAN storage?




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