86
ETERNUS
LT20
S2
Troubleshooting Table
Troubleshooting
Bad performance
Ê
Try a new cartridge. A marginal cartridge can
cause performance problems due to bad spots
on the tape requiring retries.
Ê
Backing up data that compresses poorly or is
already compressed will lower performance.
Ê
Check the size of the files. Small file size can
impact performance.
Ê
Confirm that the backup application is utilizing
block sizes of at least 32KB, preferably 64KB.
Refer to the backup application documentation
for details.
Ê
Check the network bandwidth from the host
computer. If you are backing up data over a
network, consider comparing to a local-only
backup.
Ê
Make sure the backup server has enough
memory to handle the bandwidth of the
backup or restore.
Ê
Clean the tape drive. See
for instructions.
Media attention LED issues
Contamination by loose
debris
Avoid contamination by ensuring that the library is
installed in a clean, contamination-free
environment. Cartridges should be stored verti-
cally in their plastic cases. Continue cleaning the
tape drive as needed.
Non-acclimated media
A cartridge should be acclimated for at least 24
hours before being used, particularly if it has been
stored at a substantially different temperature or
level of humidity than the library.
Problem
Solution
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