Troubleshooting A Scsi Tape Drive - Dell PowerEdge 4200 Installation And Troubleshooting Manual

15. Correct the drive-select jumper setting and ter-
minator installation.
16. Replace the computer covers, reconnect the sys-
tem to AC power, and turn on the system.
17. Run the Diskette Drives Test Group in the system
diagnostics to see whether the diskette drive sub-
system now works correctly.
Do the tests complete successfully?
Yes. You have solved the problem.
No. See Chapter 11, "Getting Help," for instructions
on obtaining technical assistance.
T
roubleshooting a SCSI Tape
Drive
A SCSI tape drive can be an internal device installed in
one of the externally accessible drive bays or an external
device that attaches to a SCSI host adapter connector on
the back panel of the computer. The SCSI tape drive is
controlled by a SCSI host adapter installed in the com-
puter, which may also control other SCSI devices
connected to one or more SCSI cables. SCSI devices
often require device drivers for the particular operating
system being used by the computer system.
Tape drive problems often result from a defective tape
drive, a defective tape cartridge, or software. Follow
these steps to troubleshoot a SCSI tape drive:
1. Remove the tape that was in use when the prob-
lem occurred, and replace it with a tape that you
know is not defective.
Is the problem resolved?
Yes. The original tape was defective. Replace it with
a new tape. You have fixed the problem.
No. Go to step 2.
2. Verify that any required SCSI device drivers are
installed on the hard-disk drive and are config-
ured correctly.
See Chapter 3, "Installing and Configuring SCSI
Drivers," in the User's Guide for instructions on
installing and configuring the SCSI device drivers
for the system's built-in SCSI host adapter or Dell
7-18 Dell PowerEdge 4200 Systems Installation and Troubleshooting Guide
PowerEdge Expandable RAID Controller host
adapter card. For any other type of SCSI host adapter
card, see the documentation that accompanied the
SCSI host adapter card.
Are the drivers installed and configured correctly?
Yes. The SCSI device drivers were installed or con-
figured incorrectly or were corrupted. You have
fixed the problem.
No. Go to step 3.
3. Reinstall the tape backup software as instructed
in the tape-backup software documentation.
Is the problem resolved?
Yes. The tape backup software was corrupted. You
have fixed the problem.
No. Go to step 4.
4. Restart the system and check for the presence of
the tape drive during the optional read-only
memory (ROM) scan sequence.
Is the problem resolved?
Yes. The drive is correctly cabled and is receiving
power. Go to step 9.
No. Go to step 5.
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.