Chapter 5: Troubleshooting Your Tape Drive
5-8
January 2004
81-81191-01 Rev A01
The tape drive cannot
write data to or read data
from a data cartridge.
Data cartridge or tape drive
problem.
•
Make sure that the data cartridge is write-
enabled. Move the write-protect switch to the
write-enabled position.
•
If you are attempting to write data, make sure
you are using a DLTtape VS1 data cartridge.
•
Make sure that the data cartridge has not been
exposed to harsh environmental or electrical
conditions and is not physically damaged in any
way.
•
Many backup applications do not read or write to
data cartridges created with a different backup
application. In this case, perform an erase,
format, or label operation on the data cartridge
using your backup application.
•
Make sure you understand any data protection or
overwrite protection schemes that your backup
application uses. Some schemes might prevent
you from writing to a data cartridge.
•
Retry the operation with a different, known-good
data cartridge.
•
Clean the tape drive.
The tape drive is not
backing up data
efficiently.
Network, data cartridge, SCSI
bus, backup data set, or
backup application problem.
•
Check the network bandwidth from the server. If
you are backing up data over a network, compare
to a local-only backup to get relative backup
speed indication.
•
Make sure that the tape drive is on its own SCSI
bus and not daisy-chained to another tape drive
or to the hard drive being backed up.
•
Clean the tape drive.
•
Try a new data cartridge. A marginal data
cartridge can cause performance problems due to
bad spots on the media.
•
Make sure that the data is being compressed. See
your backup application program’s
documentation for details.
•
Check the size of the files in the backup set.
Small file size or block size can impact
performance.
•
Confirm that the backup application is using
block sizes of at least 32KB, and preferably
64KB. See your backup application program’s
documentation for details.
Table 5-2.
Tape Drive and Connectivity Troubleshooting
(Continued)
Symptom
Problem
Solution
Содержание ValueLoader DLT VS160
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