Digital Equipment AlphaServer 2000, Owner'S Manual

Page: 161 / 196

Mass Storage Problems Indicated at Power-Up
Table 4–10 Troubleshooting Removable-Media Problems
Problem Symptom Corrective Action
Drive failure. Fault LED for drive is on
(steady). Replace drive.
Duplicate
SCSI IDs. Drives with duplicate SCSI
IDs are missing from the
show config display.
Correct SCSI IDs.
SCSI ID is set
to 7 (reserved
for host ID.) Valid drives are missing from
the
show config
display.
One drive may appear seven
times on the
show config
display.
Correct SCSI IDs.
Duplicate
host IDs on a
shared bus. Valid drives are missing from
the
show config
display.
One drive may appear seven
times on the configuration
screen display.
Change host ID using the set
pk*0_host_id
command described in
the AlphaServer 2000/2100 Firmware
Reference Guide.
Missing or
loose cables. Activity LEDs do not come
on. Drive missing from the
show config display.
Remove device and inspect cable
connections.
Missing
terminator. Read/write errors in console
event log; storage adapter
port may fail. Attach terminators as needed:
internal SCSI terminator (12-41296-
01) or external SCSI terminator
(12-37004-04).
Extra
terminator. Devices produce errors or
device IDs are dropped. Check that SCSI bus is terminated
only at beginning and end. Remove
unnecessary terminators.
I/O backplane
failure. Problems persist after
eliminating the above
problem sources. Replace I/O backplane.
Troubleshooting the System 4–23