Specifications

8-12 • Troubleshooting AlphaServer 1000A Owner's Guide
Storage Problems
Mass storage device problems at startup are usually indicated by read fail messages
or by the omission of storage devices from the show config display. Table 8-7
and Table 8-8 list suggestions for troubleshooting storage problems.
Table 8-7 Troubleshooting Fixed-Media Problems
Symptom Problem Action
Fault indicator light for drive
is on (amber).
Drive has failed. Replace drive.
Drives are missing from the
show config
display.
Drives appear intermittently in
show config
display.
Duplicate SCSI IDs (when
removable-media bus is
extended to StorageWorks
shelf).
SCSI bus length limit exceeded.
Correct removable-media SCSI
device IDs. May need to
reconfigure internal
StorageWorks backplane.
Check cabling.
Valid drives are missing from
the
show config
display.
One drive may appear seven
times on the configuration
screen display.
SCSI ID is set to 7 (reserved for
host ID).
Duplicate host IDS on a shared
bus.
Correct SCSI IDs.
Change host ID through the
pk*0_host_id
environment variable (
set
pk*0_host_id
).
For systems using Windows
NT, choose "Set default
configuration" from the Setup
menu to select the host ID.
You cannot access the software
or data on the drive.
The SCSI ID of the drive is not
unique or the SCSI drive cables
are connected incorrectly.
The SCSI drive is faulty.
See Chapter 6, "Configuring"
for information SCSI device
configuration display. If the
device is not listed in the
display, check the SCSI cabling
and the drive's SCSI ID.
Contact your service
representative.
Activity indicators do not come
on.
Missing or loose cables. Remove device and inspect
cable connections.
Drive is missing from the
show config
display.
Drive is not properly seated on
StorageWorks shelf.
Reseat drive on StorageWorks
shelf.