Storage Problems - DEC AlphaServer 1000A Owner's Manual

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
Fault indicator light for drive
is on (amber).
Drives are missing from the
show config display.
Drives appear intermittently in
show config display.
Valid drives are missing from
the show config display.
One drive may appear seven
times on the configuration
screen display.
You cannot access the software
or data on the drive.
Activity indicators do not come
on.
Drive is missing from the
show config display.
8-12 Troubleshooting
Problem
Drive has failed.
Duplicate SCSI IDs (when
removable-media bus is
extended to StorageWorks
shelf).
SCSI bus length limit exceeded.
SCSI ID is set to 7 (reserved for
host ID).
Duplicate host IDS on a shared
bus.
The SCSI ID of the drive is not
unique or the SCSI drive cables
are connected incorrectly.
The SCSI drive is faulty.
Missing or loose cables.
Drive is not properly seated on
StorageWorks shelf.
Action
Replace drive.
Correct removable-media SCSI
device IDs. May need to
reconfigure internal
StorageWorks backplane.
Check cabling.
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.
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.
Remove device and inspect
cable connections.
Reseat drive on StorageWorks
shelf.
AlphaServer 1000A Owner's Guide