STORIOA
This symbolic FRU indicates that the storage I/O adapter part number could not be determined.
Use the I/O adapter location information in the serviceable event view if it is available. If the location is not available, find the address of the I/O adapter. See the System reference code format description. Use the address to find the location. See Addresses. For part number information, see Adapter information by feature code. Replace the adapter.
For more information about failing part numbers, location codes, or removal and replacement procedures, see Part locations and location codes.