Dell 4100/180, 4100/200 manual Troubleshooting Scsi Hard-Disk Drives, Drive Indicator Error Codes

5.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.

6.Remove both computer covers.

See “Removing the Computer Covers” found earlier in this chapter.

CAUTION: See “Protecting Against Electro- static Discharge” in the safety instructions at the front of this guide.

7.Check the SCSI cable connections to the tape drive and to the SCSI host adapter connector. If the tape drive is an internal device, check the DC power cable connection to the tape drive.

Are the cables firmly connected? Yes. Go to step 9.

No. Go to step 8.

8.Reseat the cable connectors, replace the computer covers, reconnect the system to AC power, and turn it on.

Is the problem resolved?

Yes. You have fixed the problem. No. Go to step 9.

9.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources. Then remove the right computer cover.

10.Remove the tape drive. Then verify that the tape drive is configured for a unique SCSI identifica- tion (ID) number and that the tape drive is terminated or not terminated as appropriate.

See the documentation for the tape drive for instruc- tions on selecting the SCSI ID and enabling or disabling termination.

Is the tape drive configured correctly? Yes. Go to step 13.

No. Go to step 11.

11.Reconfigure the tape drive’s SCSI ID and termi- nation settings as appropriate. Reinstall the tape

drive, replace the computer covers, reconnect the system to AC power, and turn it on.

Is the problem resolved?

Yes. The tape drive was configured incorrectly. You have fixed the problem.

No. Go to step 12.

12.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources. Then remove the computer covers.

13.Replace the SCSI cable that connects the tape drive to the SCSI host adapter. Replace the com- puter covers, reconnect the system to AC power, and turn it on.

Is the problem resolved?

Yes. You have fixed the problem.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

Troubleshooting SCSI Hard-Disk Drives

Hard-disk drive problems can be caused by a number of conditions, including problems with the drive itself, the SCSI backplane board, or an interface cable.

Drive Indicator Error Codes

The SCSI backplane board monitors the internal SCSI hard-disk drives connected to the backplane board. In the event of a drive failure, systems using the optional Dell PowerEdge Expandable RAID Controller will issue the following signals using the drive indicator lights adjacent to each SCSI hard-disk drive:

•If a drive shows signs of imminent failure, the drive online indicator turns off and the drive fault indicator blinks on briefly each second.

•If a drive has failed, the drive online indicator turns off and the drive fault indicator blinks off briefly each second.

Other drive indicator patterns are listed in “SCSI Hard- Disk Drive Indicator Codes” in Chapter 3.

7-18 Dell PowerEdge 4100/180 and 4100/200 Systems Installation and Troubleshooting Guide