Troubleshooting Methodology Develop and Apply a Solution
Host Sees Device Intermittently
Start
Is the problem
Yes
occurring on more than one host
attached to the device?
Check storage device port type
Check switch port type
Check switch-to- storage data path for fault or bend
Check HBA port type
Check switch port type
Check HBA-to- switch data path for fault or bend
Is the problem
Yes
occurring with more than one device
attached to the host?
Verify HBA config matches storage device port config
Interoperability issues?
No No
Example flowchart for troubleshooting a scenario where a host sees devices intermittently, In other words, the device appears and disappears randomly from the fabric (from the host’s perspective).