Replace the storage I/O adapter.
Use the I/O adapter location information in the Service Action Log if it is available. If the location is not available, find the address of the I/O adapter (see System reference code (SRC) address formats, or see "System reference code (SRC) address formats" in the service guide for the system unit). Use the address to find the location and part number from the table below.
Use the following table to determine the part number for the field replaceable unit (FRU):
| CCIN or FFC | Type and model | Part number | Description | Location code |
| 8203-E4A | 42R7898 | System backplane (embedded SAS controller) | Un-P1 | |
| 57B8 | 8203-E4A | 44V3298 | SAS RAID enablement card | Un-P1 |
| 8204-E8A | 10N9369 | System backplane (embedded SAS controller) | Un-P1 | |
| 57B8 | 8204-E8A | 44V3298 | SAS RAID enablement card | Un-P1 |
| 9406-MMA, 9117-MMA | 42R7352 | I/O backplane (embedded SAS controller) | Un-P1 | |
| 572A | All | 44V3296 | PCI-X DDR external dual-4x port SAS adapter | Un-P1-Cx |
| 5703 | All | 39J5105 | Storage IOA | Un-P1-Cx |
| 42R5070 | Cache battery pack for 5703 | |||
| 571A | All | 42R4860 | Storage IOA | Un-P1-Cx |
| 571B | All | 42R4855 | Storage IOA | Un-P1-Cx |
| 39J5555 | Cache battery pack for 571B | |||
| 2757 | All | 39J5581 | Storage IOA | Un-P1-Cx |
| 53P0941 | Cache battery pack for 2757 | |||
| 2780 | All | 39J5581 | Storage IOA | Un-P1-Cx |
| 39J5554 | Cache battery pack for 2780 | |||
| 571E | All | 42R5130 | Storage IOA | Un-P1-Cx |
| 574F | All | 42R5133 | PCI-X DDR auxiliary cache adapter card for 571E | Un-P1-Cx |
| All | 42R4053 | Cable connection to 571E | Un-P1-Cx | |
| 39J5554 | Cache battery pack for 574F | |||
| 571F | All | 42R6578 | Combination storage and auxiliary cache (571F, 571B) | Un-P1-Cx |
| 42R3965 | Cache battery pack for 571F |