520 A fibre-channel adapter is failing.

Explanation

A failure has been detected on a fibre-channel adapter.

If the failure has been isolated to one or more fibre-channel ports, the first failing fibre-channel adapter port is shown by the additional data for the displayed error code, for example 520 2.

For the 2145-4F2 and 2145-8F2, port number 1 or 2 indicates adapter one and port number 3 or 4 indicates adapter two. For the 2145-8F4 and 2145-8G4 there is only one adapter.

For the 2145-8F4 and 2145-8G4, if the failure has not been isolated to a port, no port number is shown after the error code.

Action

If the node has more than one fibre-channel adapter, determine which adapter is failing.
Ensure that the adapter is correctly seated in its socket.
Exchange the failing FRU for a new FRU.

Possible Cause-FRUs or other:

Fibre-channel adapter assembly (100%)

Note: Although this error might be reported on a single port, the fibre-channel Small Form-factor Pluggable (SFP) connector is not a suitable replacement part.