IBM 887022X Maintenance Manual - Page 253

Note: ServeRAID-4H controllers have 4 channels; ServeRAID-4L and -4Lx controllers have only one channel; and ServeRAID-4M and -4Mx controllers have 2 channels. ServeRAID-5i controllers have no channels. The ServeRAID-5i uses the channel connectors of the server's onboard integrated SCSI controller. Table 8. SCSI identifier SCSI Channel Code (z) 1 2 3 4 5 6 7 8 9 A B C D E F Descriptions Channel 1 Channel 2 Channel 1 & 2 Channel 3 Channel 1 & 3 Channel 2 & 3 Channel 1, 2, & 3 Channel 4 Channel 1 & 4 Channel 2 & 4 Channel 1, 2, & 4 Channel 3 & 4 Channel 1, 3, & 4 Channel 2, 3, & 4 Channel 1, 2, 3, & 4 b. Confirm that the channel(s) identified from the error in step 2a on page 242 is (are) the cause of the error by verifying that the error presents itself only when the offending channel is reconnected. c. Check termination of identified channel. Note: SCSI channel termination details, if any, appear elsewhere in this publication. d. Check for proper backplane jumper configuration. Note: SCSI channel jumper details, if any, appear elsewhere in this publication. e. Check for proper cabling configuration in systems that use hard disk drive status cables. Reconnect all cables removed in step 1 on page 242. f. Disconnect one drive at a time attached to the channel identified in step 2a on page 242; then, reboot to determine which drive is causing the error. g. Replace hard disk drive cable. h. Replace hard disk drive backplane. FFFF or other code not listed 1. Place download jumpers on the controller and try to flash the firmware code to the card. 2. Isolate between SCSI subsystem and controller by disconnecting all hard disk drive cables attached to the suspect card, and reboot. CAUTION: Do not press F5. Doing so will change the server's configuration. Chapter 7. Symptom-to-FRU index 243