I have servers with only 1 Fibre channel HBA. If that 2-port HBA adapter fails, all VMs on the server lose connectivity to storage. How can I estimate the risk of data loss that might occur if a VM is in the middle of a write to storage when the HBA fails? Due to HA the VM would be restarted, and backups occur nightly. I'm concerned about data corruption / data loss that might occur on the current days transaction and how likely that is if the HBA fails.
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